Basic Probability

It allows you to know the chances of an event occurrence and predicts how likely something can take place. Probabilities expressions can take the form of 0 to 1 or a percentage of 0% to 100%. If you deal with lots of numbers and test the errors, likelihoods, or possibilities of interventions, events, or change then probabilities is the tool for you!  

Resource: Basic Probability Rules and Conditional Probability and Independence (University of Florida Biostatistics Open Learning Textbook) 

Type: Textbook chapter 
Who it’s for: Anyone looking to learn about or refresh the basic rules of probability  
Why we love it: These textbook chapters are well presented with lots of applied examples and intuitive explanations. Key probability equations are also presented, and the end of chapter summaries are very handy. 

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Resource: Basic probability theory (Sharon Goldwater – University of Edinburgh) NOTE: The document states not to redistribute without permission 

Type: Manual 
Who it’s for: Anyone who needs to refresh or improve their knowledge of basic probability theory to tackle quantitative challenges 
Why we love it: This is a great overview of the basics of probability because the different forms of notation you may come across are highlighted and the terminology is carefully explained.