Exam 19: Appendix A: Measurement and Statistics

Match the descriptive phrase with statistical term : -most frequently occurring score

The percentage of the total test variance accounted for by factors that the test has in common with other tests in a factor analysis is the __________ of the test.

Consider the frequency distribution of the scores of 25 examinees on a 50-item test: Test Score Interval Number of Examinees 96-100 4 91-95 6 86-90 8 81-85 5 76-80 2 -The mode of the above distribution of scores is

The mean is less affected than the median by the shape of a frequency distribution.

Match the descriptive phrase with statistical term : -score below which half the scores fall

Which of the following measures of variability would be most appropriate with a highly skewed distribution of scores?

Approximately what percentage of the scores in a normal distribution fall between the z values of -.5 and +.5?

A symmetric distribution is to the mean as a highly skewed distribution is to the median.

The highest level of measurement is a(n) __________ scale, which has a true zero.

Computing the 50th percentile is equivalent to computing the __________ of a group of scores.

Match the descriptive phrase with statistical term : -measure of variability around the mean

If a test is too difficult for a group of examinees, the

List and describe three measures of central tendency and the corresponding measures of variability.

Correlation implies prediction but not causation.

Which of the following is an example of measurement at a nominal level?

A normal curve is all of the following except

The highest level of measurement is measurement on an equal interval scale.

Orthogonal rotation results in the factor axes being at right angles to each other.

In Thurstone's centroid method of factoring, __________ are placed on the diagonals of the correlation matrix.

A __________ is constructed as a series of vertical bars, whereas a __________ is constructed as a series of connecting straight lines.