Which of the Following Things Can Be Done to Reduce

question 14

Multiple Choice

Which of the following things can be done to reduce the effect of individual differences?

• A)Using a matched-groups design
• B)Decrease power
• C)Collecting measurements from diverse groups of people
• D)Using a between-groups design

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Definitions:

Standard Deviations

An assessment measure that determines the degree of deviation or scattering of data points around the average.

Correlation R

A statistical measure known as Pearson's correlation coefficient that quantifies the degree and direction of linear relationship between two variables.

Cov(x,y)

The covariance between two variables X and Y, measuring how changes in one variable are associated with changes in a second variable.

Interquartile Range

A measure of statistical variability, defined as the difference between the third and first quartiles of a data set, indicating the spread of the middle 50% of the data.