Knowledge of what three important characteristics of the comparison distribution is required for hypothesis testing?
A)the median, mean, and variance
B)the mean, median, and mode
C)the mean, spread, and shape
D)the mean, standard deviation, and size

Question

Quizplus · Accepted Answer

In hypothesis testing, it is important to know the mean of the comparison distribution (to compare it with the sample mean), the spread of the distribution (indicated by the standard deviation or variance; to determine how likely it is to obtain the sample mean by chance), and the shape of the distribution (to ensure that assumptions of normality are met for certain statistical tests). Therefore, choice C, which includes the mean, spread, and shape, is the best answer. The median, mode, and size may also be relevant characteristics in some cases, but they are not always required for hypothesis testing.

Knowledge of What Three Important Characteristics of the Comparison Distribution