Tutorials
Posterior Probability: Definition + Example
A posterior probability is the updated probability of some event occurring after accounting for new information.
For example, we might be interested in finding the probability of...
Chi-Square Tests
Three Ways to Calculate Effect Size for a Chi-Square Test
In statistics, there are two commonly used Chi-Square tests:
Chi-Square Test for Goodness of Fit: Used to determine whether or not a categorical variable follows a...
Tutorials
Statistic vs. Parameter: What’s the Difference?
There are two important terms in the field of inferential statistics that you should know the difference between: statistic and parameter.
This article provides the definition for...
Tutorials
Matched Pairs Design: Definition + Examples
A matched pairs design is an experimental design that is used when an experiment only has two treatment conditions. The subjects in the experiment are grouped...
Tutorials
SOCS: A Helpful Acronym for Describing Distributions
In statistics, we’re often interested in understanding how a dataset is distributed. In particular, there are four things that are helpful to know about...
P-values and Effect Size
How to Calculate a P-Value from a T-Test By Hand
One of the most common tests used in statistics is the t-test, which is often used to determine if a population mean is equal to some...
Tutorials
Descriptive vs. Inferential Statistics: What’s the Difference?
There are two main branches in the field of statistics:
Descriptive Statistics
Inferential Statistics
This tutorial explains the difference between the two branches and why each one...
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