The Effect Size for the Data from an Independent-Measures T

question 69

Multiple Choice

The effect size for the data from an independent-measures t test can be measured by r².Which of the following also produces the value for r²?​

• A)​squaring the Spearman correlation for the same data
• B)​squaring the point-biserial correlation for the same data
• C)​squaring the Pearson correlation for the same data
• D)​taking the square root of the Pearson correlation

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Definitions:

Finite Population Correction

A statistical adjustment made when the sample size is a significant fraction of the total population, reducing variance estimates to prevent overestimation.

Standard Error

Standard error is a statistical term that measures the accuracy with which a sample distribution represents a population by using standard deviation.

Estimate

An approximation or educated guess based on available data or evidence.

Mean

The average of a set of values, calculated by dividing the sum of these values by their count.