Which test do I need

A few questions and you are at the right calculator. No statistical vocabulary required.

  1. What do you want to do with your data? Find out whether two measures are related (change)

The tool you need

Correlation and regression

Correlation measures whether two numbers move together; regression shows by how much.

What it assumes A relationship is not a cause: a third factor may be driving both.
Open the calculator Try it on a sample

Try it on the advertising spend and sales columns.

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