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MTH 465: Statistical Measurement in Sports: Independent and Dependent Variables

A guide to common terms introduced in a typical statistics or research methods course.

Understanding types of variables

In statistical research, a variable is defined as an attribute of an object of study. Choosing which variables to measure is central to good experimental design.

Example

If you want to test whether some plant species are more salt-tolerant than others, some key variables you might measure include the amount of salt you add to the water, the species of plants being studied, and variables related to plant health like growth and wilting.

You need to know which types of variables you are working with in order to choose appropriate statistical tests and interpret the results of your study.

For more information about understanding variables, please visit Understanding types of variables by Rebecca Evans.

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