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Testing Goodness of Fit with the Chi-Square

Author(s): Kaci Thompson1, Karen Nelson1

University of Maryland

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Summary:
This is a MathBench module written for students to use in a self-study mode. It uses a narrative structure, humor, and everyday examples to step the learner through the mathematical principles underlying a chi-squared test.

Licensed under CC Attribution-NonCommercial-ShareAlike 4.0 International according to these terms

Version 1.0 - published on 21 Aug 2018 doi:10.25334/Q4D70G - cite this

Description

In this module, we are going to discuss and explore a statistical test used for goodness of fit. What does this mean? You know whether your shoes fit your feet based on whether they cause pain, right?

In sort of the same way, you can decide whether your data fits your expectations using a goodness of fit test. And believe me, if your data doesn't fit, it can cause a lot of pain.

Note: having a calculator on hand will make things go faster. You can also use a spreadsheet, or calculator software on your computer, or google (to use google, type the numbers into the search bar, followed by an equal sign, and hit search).

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