Please Define the Following Key Terms

question 66

Essay

Please define the following key terms. Show Who? What? Where? When? Why Important?
-proletariat

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Definitions:

Null Hypothesis

In statistics, it's the hypothesis that there is no effect or no difference, and it is tested against an alternative hypothesis.

Mean Difference

The average difference between two sets of numbers or measurements, often used to compare the means from two samples.

T-distribution

A type of probability distribution that is symmetric and bell-shaped, but with heavier tails, used especially in scenarios with smaller sample sizes.

Degrees of Freedom

The number of independent pieces of information available to estimate another piece of information or parameters in a dataset.