Statistics Glossary

The concepts that will be asked during the interview

Variables

Definitions: continuous (quantitative), categorical (nominal, ordinal), interval, ratio

Statistical Description: mean, median, std, variance, variation, percentile

Univariate: shape, center, spread, relative position

Bivariate: correlation between the --- continuous-continuous/category-category/continuous-category.

Multivariate: correlation through regression

Distributions

Definitions

Parametric vs. Non-Parametric: a parametric statistical test is one that makes assumptions about the parameters (defining properties) of the population distribution(s) from which one's data are drawn, while a non-parametric test is one that makes no such assumption

Unimodal

Bimodal

Symmetric

Fat Tail/skewed

Density Function

Probability Distribution Function

Cumulative Density Function