ANOVA
Kruskal-Wallis Test: Definition, Formula, and Example
A Kruskal-Wallis test is used to determine whether or not there is a statistically significant difference between the medians of three or more independent...
Sampling Distributions
Central Limit Theorem: Definition + Examples
The central limit theorem states that the sampling distribution of a sample mean is approximately normal if the sample size is large enough, even if the population...
ANOVA
Two-Way ANOVA: Definition, Formula, and Example
A two-way ANOVA (“analysis of variance”) is used to determine whether or not there is a statistically significant difference between the means of three or...
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...
Regression
How to Test the Significance of a Regression Slope
Suppose we have the following dataset that shows the square feet and price of 12 different houses:
We want to know if there is a...
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...
Regression
Introduction to Simple Linear Regression
Simple linear regression is a statistical method you can use to understand the relationship between two variables, x and y.
One variable, x, is known...
Subscribe
- Never miss a story with notifications
- Gain full access to our premium content
- Browse free from up to 5 devices at once
Must read