Question

multiple - choice question
what parameters are used in hypothesis testing?
mean, median, and variance
mean, median, and mode
mean, variance, and standard deviation
mean, proportion, and standard deviation

Explanation:

In hypothesis testing, common parameters include the mean (central tendency), variance (spread), and standard deviation (square - root of variance, also a measure of spread). The median and mode are less commonly used as parameters in hypothesis testing compared to mean, variance, and standard deviation. Proportion is also a parameter used in hypothesis testing (e.g., in tests for population proportions), but the option "mean, variance, and standard deviation" is a more comprehensive and typical set of parameters used in many basic hypothesis - testing scenarios.

Answer:

mean, variance, and standard deviation