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Tests for Serial Correlation in Mean and Variance of Time Series
Tests for Serial Correlation in Mean and Variance of Time Series

... ARTICLE HISTORY ...
abstract constructs
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... conclude that the company should not open a restaurant in this area? ( = .01) 3. Last year the average grade on the inference test was 82. A random sample of this year’s student scores on the same test produced the results below. Test at the .02 significance level to see whether the scores have cha ...
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... scores because it is on a different scale of measurement. III. Standard Deviation is the square root of the variance and is interpreted as the average difference between the scores in a distribution and their mean. It is represented by s. The standard deviation is on the same scale of measurement as ...
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... fairness) is weaker. The lineage/feature-pair combination for which Dunn et al. obtained the strongest evidence for correlated evolution is that of adjective-noun and genitive-noun word order in Indo-European; with a Bayes Factor of 21.23 (reported in the paper’s online Supplementary Information) th ...
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Psychometrics

Psychometrics is a field of study concerned with the theory and technique of psychological measurement. One part of the field is concerned with the objective measurement of skills and knowledge, abilities, attitudes, personality traits, and educational achievement. For example, some psychometric researchers have, thus far, concerned themselves with the construction and validation of assessment instruments such as questionnaires, tests, raters' judgments, and personality tests. Another part of the field is concerned with statistical research bearing on measurement theory (e.g., item response theory; intraclass correlation).As a result of these focuses, psychometric research involves two major tasks: (i) the construction of instruments; and (ii) the development of procedures for measurement. Practitioners are described as psychometricians. All psychometricians usually possess a specific qualification, and while most are psychologists with advanced graduate training, many work for the government or in human resources departments. Others specialize as learning and development professionals.
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