Which of the Following Describes the Effect of an Increase

question 62

Multiple Choice

Which of the following describes the effect of an increase in the variance of the difference scores in a repeated-measures design?

• A)Measures of effect size and the likelihood of rejecting the null hypothesis both decrease.
• B)Measures of effect size increase, but the likelihood of rejecting the null hypothesis decreases.
• C)There is little or no effect on measures of effect size, but the likelihood of rejecting the null hypothesis increases.
• D)There is little or no effect on measures of effect size, but the likelihood of rejecting the null hypothesis decreases.

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Definitions:

Confidence Level

A measure expressed as a percentage that indicates the probability that a confidence interval contains the true parameter value.

Population Mean

The mean of every value in a given population.

Population Variance

The average of the squared differences from the Mean, describing the variation of the entire population.

Normally Distributed

Describes a bell-shaped frequency distribution that is symmetrical about the mean, indicating that data near the mean are more frequent in occurrence than data far from the mean.