Statistics

Descriptive Statistics
Levels of Measurement Flow Chart
Estimating Means and Proportions
Types of Discrete Random Variables
Continuous Random Variables
Probability
Independent vs. Dependent Variables
Correlation and Regression
Statistical Test Decision Chart
Formula Sheet for T-tests
Hypothesis Testing
Two Populations Hypothesis Testing
Chi-Square
Formula Sheet for One-Way ANOVA
Formula Sheet for Two-Way ANOVA

Websites:

Khan Academy: Statistics and Probability https://www.khanacademy.org/math/statistics-probability

OpenInto Statistics https://www.openintro.org/stat/

R-bloggers: List of Statistics YouTube Videos https://www.r-bloggers.com/learning-statistics-on-youtube/