We Do Not Have Control Over the Population Standard Deviation

question 60

Essay

We do not have control over the population standard deviation when forming a confidence interval,but we can control the ____________________ and the ____________________.

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Definitions:

Population Distribution

The spread of frequencies or occurrences of varying characteristics within a population.

Probability Distributions

Describes how the probabilities are distributed over the values of a random variable, identifying the likelihood of different outcomes.

Wilcoxon Rank Sum Test

A non-parametric test used to compare two independent samples to determine whether there is a significant difference between their distributions.

Kruskal-Wallis Test

A non-parametric statistical test that determines if there are statistically significant differences between two or more groups of an independent variable on a continuous or ordinal dependent variable.