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, parameters like mean (measures central tendency), variance (measures spread), and standard deviation (square - root of variance, also measures spread) are commonly used. The median and mode are less frequently used as parameters in hypothesis testing compared to mean, variance, and standard deviation. Proportion is used in hypothesis testing for categorical data (e.g., binomial proportion tests), but when considering the most common set among the given options that are all numerical - based parameters (mean, variance, standard deviation are all related to numerical data distributions and are fundamental in many parametric hypothesis tests).

Answer:

mean, variance, and standard deviation