Which Set of Sample Characteristics Is Most Likely to Produce

question 83

Multiple Choice

Which set of sample characteristics is most likely to produce a significant value for the independent-measures t statistic and a large effect size?

• A)A small mean difference and small sample variances
• B)A large mean difference and small sample variances
• C)A small mean difference and large sample variances
• D)A large mean difference and large sample variances

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Definitions:

Mean

A statistic that represents the average value in a set of numbers, calculated by adding all values and dividing by the number of values.

Placebo

A substance with no therapeutic effect, used as a control in testing new drugs, or used to stimulate a patient's psychological healing process.

StdDev

Standard Deviation, a measure of the amount of variation or dispersion in a set of values.

Median

The central number in a series that divides the upper half from the bottom half.