If a Null Hypothesis That States That Two Populations Are

question 17

Multiple Choice

If a null hypothesis that states that two populations are identical is rejected using a nonparametric test, then it is safe to assume that

• A) neither the means nor the variances are equal.
• B) the means of the populations are not the same.
• C) the variances of the populations are not the same.
• D) We cannot be sure of the way in which the populations differ from each other.

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Definitions:

Experimental Group

The experimental group in a scientific experiment refers to the group of subjects who receive the variable being tested, in contrast to the control group.

Mean

The mathematical average of a set of numbers, calculated by adding them together and dividing by the number of terms in the set.

Descriptive Statistics

Statistical methods that summarize and organize the characteristics of a dataset, including measures like mean, median, mode, and standard deviation.

Range

The difference between the highest and lowest scores in a set of data, indicating the spread of scores.