# Reliability

This lesson is called Reliability, part of the Inferential Statistics with R course. This lesson is called Reliability, part of the Inferential Statistics with R course.

### Transcript

Click on the transcript to go to that point in the video. Please note that transcripts are auto generated and may contain minor inaccuracies.

## Your Turn

Perform a test of internal consistency using both omega and alpha on the SWLS scale at time 2.

Does the scale have good internal consistency at time 2, as well?

## Learn More

Read more about the omega() and alpha() functions in the psych package.

The Personality Project also has a great tutorial on Using R and the psych package to find omega.

Interested in learning more about why it may be preferential to use omega instead of alpha? Check out the article "Thanks coefficient alpha, we'll take it from here " by McNeish (2018). Use this link to download the unformatted open access version of the article.

## Have any questions? Put them below and we will help you out!

## Course Content

21 Lessons

You need to be signed-in to comment on this post. Login.

## Maria Cristina Limlingan • January 13, 2022

Thanks for sharing about omega - this is good information to know. I'm wondering if you suggestions about how to do inter rater reliability between two people in R? (e.g. 2 people doing an observation and want to find out if they are coding similarly)