Statistics in plain English

A quick guide to statistics, formulas, and degrees of freedom

Introduction to social science research and terminology

Measures of central tendency

Measures of variability

The normal distribution

Standardization and z scores

Standard errors

Statistical significance, effect size, confidence intervals

t tests

One-way analysis of variance

Factorial analysis of variance

Repeated-measures analysis of variance

Correlation

Regression

The chi-square test of independence

Factor analysis and reliability analysis : data reduction techniques.