Statistics Tutorials

Statistics Basics

Difference between Sample and Population

Data Type and Data Summary

Difference between Descriptive Statistics and Inferential Statistics

Descriptive Statistics

Quartile: Definition and Example

Sample Variance Formula and Calculation by Hand

Population Variance Formula and Calculation by Hand

Inferential Statistics

Two-Way ANOVA: Formulas and Calculation by Hand

Two sample t-test: Definition, formula, and Examples

OLS vs. MLE in Linear Regression

Maximum Likelihood Estimation (MLE) in Linear Regression

Calculate Sample Size for Chi-square Test

Linear Algebra

Orthonormal Vectors: Definitions and Examples

Vector and Arrow in Space

Linear Subspace

Difference between Space and Subspace

Orthogonal Projection

Mean as a Projection

Linear Regression and Orthogonal Projection

Applications

Experimental Design in Advertising Research