Category: Statistics

The difference between Mean Squared Residuals (MSR) and Mean Square Error (MSE) is on the denominator of the formula. Formula of Sum of Squared Residuals (SSR) In particular, both MSR and MSE start with the sum of squares of residuals...

1. What is Logistic Regression? Logistic regression is a model testing the relationship between Y (which is as a binary variable) and X (X can be more than one). logistic regression is also called logit regression. 2. Difference between logistic regression...

1. Definition of Linear Regression Model Multiple linear regression is a linear model accessing the relationship between a dependent variable (DV, or Y) and multiple intendent variables (IV, or X). For instance, you might want to test how consumer purchase...

This tutorial shows how to write null and alternative hypothesis for two-way ANOVA. It is an extension of my other tutorial on this same topic. 1. Introduction A two-way ANOVA is used to test whether the means from the two or more...

1. Type I ANOVA 1.1 Definition of Type I ANOVA SS(A) for factor A SS(B | A) for factor B SS(AB | A, B) for interaction AB SS(A) is SS attributable to A, even including those that could also have...

1. Introduction What are the meanings of different types of ANOVA? In other words, what are Type 1 (Type I), Type 2 (Type II), and Type 3 (Type III) ANOVA? The following uses the model of factors A and B,...

Two sample t-test is also called independent sample t-test or unpaired sample t-test. This tutorial explains what two sample t-test is, its formula, and examples of two sample t-test. Motivation Example Imagine that a researcher is interested in determining whether...