A summary on random variables, covering: the Bernoulli random variable, the binomial random variable, the negative binomial random variable, the geometric random variable, the hypergeometric random variable, the poisson random variable, the uniform random variable, the exponential distribution, the gamma distribution, and the normal distribution. Ample examples are provided to aid your understanding.

A summary on probability, covering: Venn-diagrams, permutations, combinations, Bayes’ rule, and independence.

A summary on descriptive statistics, covering: numerical and categorical data, skewness, frequency polygon, numerical methods, measures of location and measures of spread.