High Performance Data Analytics复习笔记

Statistics Refresher

types of data

• quantitative: data consists of numerical measurements
  • discrete
  • continuous
• qualitative: data consists of attributes, labels or non-numerical categories
  • nominal
  • ordinal

measures of location

• sample mean
• sample mode
• sample median
• quantile

measures of dispersion

• range
• interquartile range
• sample variance
• sample standard deviation

measure of association

• sample correlation

Random Variables and Probability Distributions

discrete random variables

Bernoulli distribution

• definition
• properties

binomial distribution

poison distribution

continuous random variables

normal distribution