Week 5 Psychometrics Check

There is a set standard for the number of days that should be between a test and retest

Psychologists have not set a fixed value at which reliability can be interpreted as satisfactory or not

Diana gives a test with a 5-point Likert scale: never, sometimes, often, almost always. This is a

On a negatively skewed curve, which is true?

If John has scored 53 on a test, what can we say about how she has done?

Cohen's kappa is used for

Defining characteristics of psychological tests

Linear transformations include all but the following

Classical Test theory can be modeled as

Generalizability theory

To correct for decreasing test length using split-half reliability

A reliable test measures what we said it would measure

1. On all normally distributed curves, the mean, median, and mode are the same

Class average is 0.5 SD above nat'l mean of 85; passing is 1 SD below the mean, so likely many failed

Correlations can range from -1 to +1 but reliability coefficients range from 0 to 1, even though they're correlations

Measures of central tendency tell you something about the middle of a series of #s but little about the variability

Approximately 84% of people perform higher than 1 SD below the mean

What is the median of the following group of numbers: 4, 7, 8, 8, 9, 10, 12, 14?

Army Beta test was used with those unable to read, write, or speak English

In order to estimate the percentile rank for any given z score, we have to assume the distribution of scores is normal

What is the range of the following group of scores: 4, 7, 8, 8, 9, 10, 12, 14