The purpose of this thesis is to determine the power relationship, through computer simulation, between the parametric ANOV and non-parametric Wilson tests under controlled conditions of error non-normality. Data is simulated using the 12 cell factorial ANOV model with three levels of factor A, four levels of factor B, and six observations per cell. Interaction is characterized such that its effect is proportional to the effect of factor A with the constant of proportionality related to factor...

Topics: analysis of variance (ANOV), Wilson test, power, simulation, error distribution, interaction,...

This thesis presents a statistical analysis of the data generated during the Thermal Pinpoint experiment, conducted 19 July 1983 to 10 December 1983- It analyzes the target acquisition capabilities of tanks equipped with either thermal or optical sighting systems under a variety of conditions. The analyses are conducted using both parametric and nonparametric methods to test hypotheses concerning the target acquisition process for various populations of observers. The results of the analysis...

Topics: Operations research, target acquisition, analysis of variance, functional category, factors

Various methods of estimating main effects from ordinal data are presented and contrasted. Problems discussed include: (1) at what level to accumulate ordinal data into linear measures; (2) how to maintain scaling across analyses; and (3) the inevitable confounding of within cell variance with measurement error. An example shows three methods of estimating demographic main effects from student responses to an arithmetic test previously reported and three approaches to reporting those results:...

Topics: ERIC Archive, Analysis of Variance, Demography, Error of Measurement, Estimation (Mathematics),...

This thesis addresses the relative influence that public opinion and the current international situation have on the two portions of the budget dealing with national security: the defense and international affairs budgets. The purpose of the thesis is to evaluate the correlation between the two budgets and explain any variations. The hypothesis of the thesis is that international affairs budget is driven more by economic concerns of the nation and the defense budget is driven more by the...

Topics: DTIC Archive, Teske, Deborah O., NAVAL POSTGRADUATE SCHOOL MONTEREY CA, *DEPARTMENT OF DEFENSE,...

This study of human identification of complex visual stimuli is a step toward an integrated description of the perceptual process whereby stimuli are represented psychologically and the decision process that makes use of the stimulus representation in selecting an identification response. A multidimensional scaling procedure was applied to judgments of stimulus similarity to derive the dimensions of a perceptual space and the relative loci of stimuli in that space, and a probabilistic decision...

Topics: DTIC Archive, Getty,David J, BOLT BERANEK AND NEWMAN INC CAMBRIDGE MASS, *IDENTIFICATION, *VISUAL...

A study investigated whether differences exist in the freshman-level course grades between the "high-risk" college freshmen enrolled in a linked-course developmental program and the other freshmen who were not required to participate in the developmental program. Subjects, 286 "non-developmental" freshmen and 71 freshmen identified as either "high developmental" or "low developmental" through a combination of test scores and a written essay, all took the...

Topics: ERIC Archive, Academic Achievement, Analysis of Variance, College Freshmen, College Outcomes...

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7.0

May 7, 2020
05/20

by
Rao, Poduri S. R. S

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xix, 204 pages : 23 cm

Topics: analysis of covariance, Variantie-analyse, Analysis of Variance, Analysis of variance, Analyse de...

Display format and highlight validity were shown to affect visual display search performance; however, these studies were conducted on small, artificial displays of alphanumeric stimuli. A study manipulating these variables was conducted using realistic, complex Space Shuttle information displays. A 2x2x3 within-subjects analysis of variance found that search times were faster for items in reformatted displays than for current displays. Responses to valid applications of highlight were...

Topics: NASA Technical Reports Server (NTRS), ALPHANUMERIC CHARACTERS, DISPLAY DEVICES, FORMAT,...

In this paper, we present methods to analyze and improve an EEG-based engagement assessment approach, consisting of data preprocessing, feature extraction and engagement state classification. During data preprocessing, spikes, baseline drift and saturation caused by recording devices in EEG signals are identified and eliminated, and a wavelet based method is utilized to remove ocular and muscular artifacts in the EEG recordings. In feature extraction, power spectrum densities with 1 Hz bin are...

Topics: NASA Technical Reports Server (NTRS), SITUATIONAL AWARENESS, ALERTNESS, OPERATOR PERFORMANCE,...

This paper is a tutorial introduction to the analysis of variance (ANOVA), intended as a reference for aerospace researchers who are being introduced to the analytical methods of the Modern Design of Experiments (MDOE), or who may have other opportunities to apply this method. One-way and two-way fixed-effects ANOVA, as well as random effects ANOVA, are illustrated in practical terms that will be familiar to most practicing aerospace researchers.

Topics: NASA Technical Reports Server (NTRS), ANALYSIS OF VARIANCE, EXPERIMENT DESIGN, AEROSPACE...

This thesis proposes new methods, based on dynamic programming, for solving certain single-stage and multi-stage integer stochastic knapsack problems. These problems model stochastic portfolio optimization problems (SPOPs) which assume deterministic unit weight, and normally distributed unit return with known mean and variance for each item type. Given an initial wealth, the objective is to select a portfolio that maximizes the probability of achieving or exceeding a specified final return...

Topics: DTIC Archive, Khoo, Wai G., NAVAL POSTGRADUATE SCHOOL MONTEREY CA, *STOCHASTIC PROCESSES, *DYNAMIC...

Sensor noise is an unavoidable fact of life when it comes to measurements on physical systems, as is the case in feedback control. Therefore, it must be properly addressed during dynamic system identification. In this work, a novel approach is developed toward the treatment of measurement noise in dynamical systems. This approach hinges on proper stochastic modeling, and it can be adapted easily to many different scenarios, where it yields consistently good parameter estimates. The Generalized...

Topics: DTIC Archive, Reynolds, Odell R, AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH, *STOCHASTIC...

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14

Dec 21, 2019
12/19

by
Dodge, Yadolah, 1944-

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xvii, 499 pages : 24 cm

Topics: Statistik, Experimentauswertung, Experiments Results Statistical analysis, Analysis of variance,...

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Jul 12, 2010
07/10

by
NON

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Techniques are discussed in the following areas: astrometry, photometry, infrared observations, radio observations, spectroscopy, imaging of coma and tail, image processing of observation. The determination of the chemical composition and physical structure of comets is highlighted.

Topics: ANALYSIS OF VARIANCE, NONPARAMETRIC STATISTICS, STATISTICAL ANALYSIS, STATISTICAL DISTRIBUTIONS,...

Who Should Read this Report and Why? DoD acquisition executives, program managers, and independent testers and evaluators should read this report because similar management control issues may apply to other weapons and information technology acquisitions. The All Source Analysis System (ASAS) is an Army Acquisition Category II, mission-critical weapon system that has been in development since 1979. It is a family of systems being acquired and deployed by evolutionary blocks and spiral version...

Topics: DTIC Archive, INSPECTOR GENERAL DEPT OF DEFENSE ARLINGTON VA, *ORGANIZATIONS, *MANAGEMENT PLANNING...

Chronic exposure to waste anesthetic gas (WAG) may lead to health problems. The purpose of this study was to compare WAG concentrations resulting from four combinations of FGF and vaporizer settings during a simulated intravenous induction where the anesthetic is deepened using a volatile anesthetic delivered via mask ventilation prior to intubation. Using lung model, WAG was sampled three times each using four different combinations and three volatile anesthetics: 3% sevoflurane, 2%...

Topics: DTIC Archive, Barberio, Joy C, UNIFORMED SERVICES UNIV OF THE HEALTH SCIENCES BETHESDA MD, *AIR...

The purpose of this thesis is to identify relevant characteristics associated with service choice at the United States Naval Academy (USNA). Specifically, this study compared male midshipmen from the classes of 2000 - 2006 who chose the United States Marine Corps as a first choice and male midshipmen who chose the submarine force upon graduation as a first choice, and measured the predictability of these service choices using appropriate independent variables. Analysis of variance (ANOVA) and...

Topics: DTIC Archive, Burroughs, John C, NAVAL POSTGRADUATE SCHOOL MONTEREY CA, *PERSONNEL SELECTION,...

The conceptualization of analysis of covariance (ANCOVA), as an analysis of variance (ANOVA) on the residual scores that are obtained when the dependent variable is regressed on the covariate, is mathematically incorrect. If residuals are obtained from the pooled within-groups regression coefficient, ANOVA on the residuals results in an inflated alpha-level. If the regression coefficient for the total sample combined into one group is used, ANOVA on the residuals yields an inappropriately...

Topics: ERIC Archive, Analysis of Covariance, Analysis of Variance, Least Squares Statistics, Mathematical...

This paper discusses a utility function estimation procedure developed to provide curriculum planning information on elementary school principals. Both theoretical and empirical studies were performed to evaluate the procedure. The results of the use of this approach to obtain data from a national sample of principals are presented. (Author)

Topics: ERIC Archive, Analysis of Variance, Curriculum Development, Decision Making, Elementary Education,...

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10.0

Nov 27, 2019
11/19

by
Finn, Jeremy D

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xiii, 407, 166, 410-423 p. 24 cm

Topics: Multivariate analysis, Analysis of variance

The purpose of this project was to investigate the conditions which favor use of group problem solving and decision making to examine the effect of differing organizational climates during the various phases of the systems acquisition process on selection of appropriate participatory decision making styles, to evaluate and identify quantitative methods to assist in amalgamating group opinion, and to understand the appropriate steps in utilizing this decision making approach in the systems...

Topics: DTIC Archive, Whipple,William Benjamin , Jr, DEFENSE SYSTEMS MANAGEMENT COLL FORT BELVOIR VA,...

Statistical cost control decisions may be based on two competing decision models. The Markovian Control model controls a process by investigating the process whenever the reported cost exceeds a fixed critical limit. The Bayesian Control model controls a process by using the reported cost to update the probability of the process being in-control and investigate the process whenever such posterior probability is less than a fixed critical value. This paper compares the relative effectiveness of...

Topics: DTIC Archive, Song,Soo sup, NAVAL POSTGRADUATE SCHOOL MONTEREY CA, *DECISION MAKING, *COST...

The authors investigate various techniques for determining a tolerance limit L such that the probability is gamma that at least a proportion P of a population produced in batches exceeds L. First, they evaluate the approach of Lemon for this problem and then present alternative approaches. If the variance ratio is known, one may obtain exact tolerance limits. For settings where the variance ratio is not necessarily known, they describe a procedure, based on the Satterthwaite approximation, for...

Topics: DTIC Archive, Mee,Robert W, SOUTHERN METHODIST UNIV DALLAS TEX DEPT OF STATISTICS, *MATHEMATICAL...

College students and college recruiters rated bogus resumes of twelve senior industrial management students who were allegedly seeking employment. In addition to subject population, three variables were systematically varied in each resume: applicant's sex, physical attractiveness, and scholastic standing. The dependent variable was subjects' perceptions of the applicant's suitability for the position of head of a furniture department in a large department store. Significant effects showed that...

Topics: ERIC Archive, Academic Achievement, Analysis of Variance, Employment Interviews, Evaluation...

In light of the continuing debate over the relative merits of various ways of assessing student achievement, it seems appropriate to examine longitudinal data which reflect student performance on one measure as a basis for recognizing and utilizing the measure's particular strengths. This study is the follow-up to an earlier study conducted using data from the state of Tennessee for student scale scores in science for the years 1990-1994. The current data set consisted of school system level...

Topics: ERIC Archive, Academic Achievement, Academic Standards, Analysis of Variance, Educational...

A study was conducted to explore the ways in which instructional method and text quality influence the young reader's interpretation of inside view and character plans in fiction. Thirty-six third graders from a northeastern, suburban, public elementary school served as subjects. Twelve children were selected randomly from students rated as strong, average, and weak. Treatment conditions were randomly assigned to the groups: no instruction/original text (control); no instruction/basal text...

Topics: ERIC Archive, Analysis of Variance, Basal Reading, Childrens Literature, Fiction, Grade 3,...

The consequences of interrupting someone in the middle of a complex task are of considerable practical and theoretical interest. The authors examine one behavioral measure of the disruption caused by task interruption, namely the resumption lag, or the time needed to collect one's thoughts and restart a task after an interruption is over. The resumption lag (in this task environment) was double the interval between uninterrupted actions (3.8 seconds vs. 1.9 seconds), indicating a substantial...

Topics: DTIC Archive, Altmann, Erik M, MICHIGAN STATE UNIV EAST LANSING DEPT OF PSYCHOLOGY, *COGNITION,...

The usual objective in collaborative or referee experimentation is to make comparisons among the set of participants with the over-all criterion that stations be no more diverse than runs at a station. Thus, station means and variances are the values for interstation comparison. This paper is concerned with the response variable for a particular class of referee experimentation and its analysis.

Topics: DTIC Archive, Foster, Walter D., FORT DETRICK FREDERICK MD, *EXPERIMENTAL DESIGN, *COLLABORATIVE...

The effects of slide photos on ideational fluency in 240 children in grades IV, VII and IX were studied. Children listed uses of tires and knives and similarities between potatoes and carrots, and cats and mice. It was reasoned that stimula which attract attention too closely to physical characteristics of objects directly under consideration should impede productivity of answers. The results strongly substantiated this prediction for grade IX but not for grades IV and VII. Presenting slides of...

Topics: ERIC Archive, Analysis of Variance, Concept Formation, Creativity, Creativity Research, Creativity...

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xvii, 430 pages : 25 cm

Topics: variantie-analyse, analysis of covariance, multivariate analyse, analysis of variance, Multivariate...

Strategic alliances promise an effective means for companies to fill critical gaps and gain position of competitive advantage. A majority of executives believe alliances represent a prime vehicle for future growth, and alliances are expected to account for an increasing percentage of company value. Yet despite the prevalence of alliances, estimates are that up to 75 percent of them fail. The authors investigate, using a meta-analytic technique, underlying factors that lead to alliance success....

Topics: DTIC Archive, Gravier, Michael J, UNIVERSITY OF NORTH TEXAS DENTON, *INDUSTRIES, *CORPORATIONS,...

Topics: DTIC Archive, Lin,Ching-Chuong, ROCHESTER UNIV NY DEPT OF STATISTICS, *STATISTICAL TESTS,...

We show how modern techniques of multiple time series analysis can be used to determine if two time series are related by the model: Y(t) = (gamma sub 0)X(t) + (gamma sub 1)X(t - 1) + ETA(t), X(t) + alpha X(t - 1) = epsilon(t). (Author)

Topics: DTIC Archive, Tritchler,David, TEXAS A AND M UNIV COLLEGE STATION INST OF STATISTICS, *TIME SERIES...

This is the Final report on phase three of the Adaptive Tracking System Study, which considers the application of adaptive filtering to passive sonar bearing estimation. The study was initiated because the adaptive filter structure seemed well suited to bearing estimation problems involving unknown input statistics and dynamic targets. In particular, (a) an adaptive filter does not require a priori power spectral information on signal and noise fields, (b) because it is iterative, it can track...

Topics: DTIC Archive, Feintuch,P L, HUGHES AIRCRAFT CO FULLERTON CA GROUND SYSTEMS GROUP, *ADAPTIVE...

In this paper a discussion and re-analysis of experimental data is carried out. The data consist of measurements of the performance on two tasks (verbal and spatial) that are performed by the two different brain halves. The original experiments and analysis had been conducted by R. Klein and R. Armitage in the investigation of ultradian rhythms in humans. The period of the ultradian cycle had been hypothetically equated to the period of REM-sleep occurrence. In the re-analysis, previously...

Topics: DTIC Archive, Andresen,Torsten, NAVAL POSTGRADUATE SCHOOL MONTEREY CA, *CIRCADIAN RHYTHMS,...

Some first and second order response surface designs are discussed from the point of view of their ability to detect certain likely kinds of lack of fit. This leads to consideration of conditions for representational adequacy of first and second order models in transformed predictor variables. (Author)

Topics: DTIC Archive, Box,George E P, WISCONSIN UNIV-MADISON MATHEMATICS RESEARCH CENTER,...

The use of importance sampling for estimation of small probabilities is illustrated by means of a signal-detection example. In particular, false alarm probabilities in the ten to the minus 7th power range are accurately estimated by means of only 1000 independent trials. The fundamental variance-reducing capability of importance sampling is explored and used to significantly improve the performance of the probability estimate for the detection example considered. Guidelines for choosing good...

Topics: DTIC Archive, Nuttall,Albert H, NAVAL UNDERWATER SYSTEMS CENTER NEW LONDON CT NEW LONDON LAB,...

AGE, SEX, AND IQ DIFFERENCES IN THE CHARACTERISTICS OF THE CONCEPTUAL PERFORMANCE OF ELEMENTARY SCHOOL CHILDREN WERE STUDIED. PERFORMANCE MEASURES WERE OBTAINED THROUGH THE USE OF DUNN'S OBJECT SORTING TASK (OST) WHICH PROVIDED SUCH INDICATORS AS SIZE OF THE COGNITIVE MATRIX, ACCESSIBILITY OF THE CONCEPTS IN THE MATRIX, AND DEGREE OF PRECISION IN THE VERBAL REPRESENTATION OF THE CONCEPTS IN THE MATRIX. THE SAMPLE CONSISTED OF 99 UPPER MIDDLE CLASS ELEMENTARY SCHOOL CHILDREN WITH A MEAN STANFORD...

Topics: ERIC Archive, Age Differences, Analysis of Variance, Childhood Attitudes, Cognitive Tests,...

TO FIND OUT IF CULTURALLY DEPRIVED CHILDREN SHOW CHANGE IN ACADEMIC READINESS AS A RESULT OF SPECIAL PRESCHOOL PROGRAMS, 3 GROUPS OF CHILDREN (14 TO 17 IN EACH) IN 3 DULUTH SCHOOL AREAS WERE PRE- AND POSTTESTED WITH THE STANFORD-BINET AND SRA PRIMARY MENTAL ABILITIES TESTS. A CONTROL GROUP OF 30 CHILDREN FROM THE SAME 3 SCHOOL AREAS WERE GIVEN THE TESTS BUT DID NOT ATTEND PRESCHOOL. THE REGULAR HEAD START CURRICULUM WAS USED IN 1 PRESCHOOL GROUP WHILE A SECOND GROUP WAS GIVEN SPECIAL CREATIVE...

Topics: ERIC Archive, Academic Achievement, Analysis of Variance, Compensatory Education, Disadvantaged,...

The consistency across time and readers of the scoring of National Assessment of Educational Progress (NAEP) open-ended exercises was examined. The procedure studied is a nominal categorical scoring. Ten readers independently read 28 sample responses to each of 12 open-ended exercises at three different times. All ten readers agreed on their assignment on about 75 percent of the sample responses. About 89 percent of the time a reader agreed on the category assignment from one reading to...

Topics: ERIC Archive, Analysis of Variance, Elementary Secondary Education, Essay Tests, Reliability,...

Multiple regression studies of schools are capable of detecting only "average" effect. A basic assumption of such studies is that all schools are functioning within the parameters of a given educational technology and that differences in output can be attributed to different levels of input. With decentralized decision making characteristics of public elementary and secondary education, it is entirely possible that some schools are functioning within totally different parameters than...

Topics: ERIC Archive, Academic Achievement, Achievement Rating, Analysis of Variance, Demography,...

Non-linear least squares model fitting problems differ from general optimization problems due to the special structure of the least squares normal equations. In simple least squares problems, that structure algorithmic simplification can be achieved. More general least squares problems can often be made partitionable by proper parameter manipulations. In this report, sufficient partitionability conditions are derived and parameter manipulations are discussed for the achievement of...

Topics: DTIC Archive, Celmins, Aivars, ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD, *FITTING...

Two or more directions of motion cannot be discriminated from one direction over separations of direction greater than 16 and less than 60 deg at threshold contrast. The multiple directions produce a percept indistinguishable from a single direction. When the same stimuli are presented at 6 or more times threshold contrast, another kind of perception error occurs: the component directions are seen separately but their perceived directions repel one another. In a series of experiments, contrast,...

Topics: DTIC Archive, Marshak, William P, AIR FORCE INSTITUTE OF TECHNOLOGY WRIGHT-PATTERSON AFB OH, *IMAGE...

Two or more directions of motion cannot be discriminated from one direction over separations of direction greater than 16 and less than 60 deg at threshold contrast. The multiple directions produce a percept indistinguishable from a single direction. When the same stimuli are presented at 6 or more times threshold contrast, another kind of perception error occurs: the component directions are seen separately but their perceived directions repel one another. In a series of experiments, contrast,...

Topics: DTIC Archive, Marshak, William P, AIR FORCE INSTITUTE OF TECHNOLOGY WRIGHT-PATTERSON AFB OH, *IMAGE...

The past decade has seen the publication of a large number of books and papers on the analysis of multi-way contingency tables using loglinear and logit models. The present article presents a summary of the statistical theory that underlies much of this work, and provides some linkage to models and methods of special interest to psychometricians and econometricians. The discussion includes a review of recent and current research on the computation of maximum likelihood estimates for loglinear...

Topics: DTIC Archive, Fienberg,Stephen E, CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF STATISTICS,...

This paper uses generalizability (G) theory as a framework to investigate the reliability and construct validity of the Air Force Job Performance Measurement System. G theory was a useful technique for examining the psychometric quality of the measurement system because it permits the specification and estimation of multiple sources of measurement error. G theory was applied to newly developed work sample procedures, Walk-Through performance Tests and to a series of job proficiency ratings...

Topics: DTIC Archive, Kraiger, Kurt, COLORADO UNIV AT DENVER DEPT OF PSYCHOLOGY, *PERFORMANCE(HUMAN),...

This study analyzes the relative effects of two categories of variables upon the learning of a basic social science concept by a kindergarten population. Major hypotheses were: (1) Subjects receiving treatments with low degrees of irrelevant material would score significantly higher on concept-learning measures related to the task than those receiving treatments with medium and high degrees of irrelevant data, (2) Subjects receiving treatments with the greater number of negative exemplars would...

Topics: ERIC Archive, Analysis of Variance, Audiovisual Aids, Concept Formation, Instructional Materials,...

Communicative anxiety, its corresponding avoidance behavior, and the relationship of the two to communication performance in the small group are investigated. Various definitions of anxiety are discussed. Objectives of the study are to increase knowledge in the area of anxiety reduction, avoidance behavior and communication performance by (1) widening the use of Systematic Desensitization (S.D.) to include all levels of anxiety, (2) broadening the technique by utilizing S.D. in the classroom,...

Topics: ERIC Archive, Analysis of Variance, Anxiety, Behavior Patterns, Interpersonal Competence,...

Livingston's work is a careful analysis of what occurs when one pools two populations with different means, but similar variances and reliability coefficients. However, his work fails to advance reliability theory for the special case of criterion-referenced testing. See ED 042 802 for Livingston's paper. (MS)

Topics: ERIC Archive, Analysis of Variance, Criterion Referenced Tests, Error of Measurement, Reliability,...

The objective of the study was to determine the effect which a unit dealing with recursive definitions would have on students' achievement in applying the principle of mathematical induction (PMI). Twenty-four secondary school students were randomly assigned to control and experimental groups. Students in the control group studied programmed units of the PMI program first and then programmed units on the recursive definition program. This procedure was reversed by the experimental group. Data...

Topics: ERIC Archive, Achievement, Analysis of Variance, Comparative Analysis, Induction, Instruction,...