I refer a lot to this book. Written by #RLadies powerhouse Danielle Navarro. Written for R users but also useful for non-r users.

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Another awesome and free statistics book. If you prefer an online version with links to other statistics resources on the web, click here instead.

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A simple and useful quick guide about some of the most popular statistical tests.

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Andy Field's website- The author of the best selling Discovering Statistics books.

 

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