If One Calculates R for Raw Scores, and Then Calculates

question 65

Multiple Choice

If one calculates r for raw scores, and then calculates r on the z scores of the same data, the value of r will _______.

• A) stay the same
• B) decrease
• C) increase
• D) equal 1.00

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Definitions:

Chi-square Statistic

A measure used in statistics to evaluate the differences between observed and expected frequencies in categorical variables.

Expected Frequencies

In statistics, the numbers of observations or outcomes that one would expect to occur in each category if the null hypothesis were true.

Nonparametric Tests

Statistical tests not relying on data belonging to any particular distribution; often used when data does not meet the assumptions of parametric tests.

Normally Distributed

Describing a data set whose distribution forms a symmetrical, bell-shaped curve, with most values clustering around a central mean.