Hypothesis Testing
Hypothesis Testing
One Proportion Z-Test: Definition, Formula, and Example
A one proportion z-test is used to compare an observed proportion to a theoretical one.
This tutorial explains the following:
The motivation for performing a one proportion z-test.
The...
Hypothesis Testing
Two Sample t-test: Definition, Formula, and Example
A two sample t-test is used to determine whether or not two population means are equal.
This tutorial explains the following:
The motivation for performing a...
Hypothesis Testing
One Sample t-test: Definition, Formula, and Example
A one sample t-test is used to test whether or not the mean of a population is equal to some value.
This tutorial explains the following:
The motivation...
Hypothesis Testing
How to Perform the Wilcoxon Signed Rank Test
The Wilcoxon Signed Rank Test is the non-parametric version of the paired t-test. It is used to test whether or not there is a significant difference...
Hypothesis Testing
Mann-Whitney U Test
A Mann-Whitney U test (sometimes called the Wilcoxon rank-sum test) is used to compare the differences between two independent samples when the sample distributions...
Hypothesis Testing
Paired Samples t-test: Definition, Formula, and Example
A paired samples t-test is used to compare the means of two samples when each observation in one sample can be paired with an...
Hypothesis Testing
Introduction to Hypothesis Testing
A statistical hypothesis is an assumption about a population parameter.
For example, we may assume that the mean height of a male in the U.S....
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