## Blog Posts

Each of my blog posts are answers to questions my students have asked in my into stats classes. I try to keep my answers short and focused on the essential information the students need to know without diving too deep into theory. When I think it useful, I provide links to my Dr Dawn Wright blog where I go deeper to give more insight.

## Recent Posts

### Chi-square Test for Independence

Key concepts for understanding the Test for Independence.

### Chi-square Tests Overview

Chi-square tests are very useful in understanding relationships and proportions. This is a concise overview.

### Chi-square Test for Homogeneity

Key concepts of the Chi-square Test for Homogeneity – how it differs from the Test for Indpendence.

### Chi-square Goodness of Fit Test

Key concepts in understanding the Chi-square Goodness of Fit test.

### Why is a two-tail p-value twice the one-tail value?

The logic behind why a two-tail p-value is always twice the one-tail value.

### Tail of the Test?

How to determine which side of the distribution to use in your hypothesis test.

### What is p-value?

Understanding p-value is often a challenge for stats students. Here is a focused explanation.

### 2-Sample z-test

Excerpt for 2-sample z-test coming

### Measurement Scales

This is a studentâ€™s question about the NOIR acronym for the most common measurement scales. Here is my answer:

### Z or T?

Picking the right distribution to use for your hypothesis test is important. For comparing means, we use either the z or the t-distribution. Here’s how to choose the right one.

Each of my blog posts are answers to questions my students have asked in my intro stats classes. I try to keep my answers short and focused on the essential informationÂ  intro to intermediate stats students need to know without diving too deep into theory. Where I think it useful, I do have links to my Dr.Dawn. Wright blog where I go deeper into the topics to give more insight.

On Trend

## Most Popular Stories

### Chi-square Test for Independence

Key concepts for understanding the Test for Independence.

### Chi-square Tests Overview

Chi-square tests are very useful in understanding relationships and proportions. This is a concise overview.

### Chi-square Test for Homogeneity

Key concepts of the Chi-square Test for Homogeneity – how it differs from the Test for Indpendence.

### Chi-square Goodness of Fit Test

Key concepts in understanding the Chi-square Goodness of Fit test.