Karen Grace-Martin

Is there a fix if the data is not normally distributed?

February 19th, 2018 by

In this video I will answer another question from a recent webinar, Random Intercept and Random Slope Models.

We are answering questions here because we had over 500 people live on the webinar so we didn’t have time to get through all the questions.

(more…)


What packages allow you to deal with random intercept and random slope models in R?

February 13th, 2018 by

In this video I will answer a question from a recent webinar, Random Intercept and Random Slope Models.

We are answering questions here because we had over 500 people live on the webinar so we didn’t have time to get through all the questions.

(more…)


Member Training: A Primer on Exponents and Logarithms for the Data Analyst

January 2nd, 2018 by

Ah, logarithms. They were frustrating enough back in high school. (If you even got that far in high school math.)

And they haven’t improved with age, now that you can barely remember what you learned in high school.

And yet… they show up so often in data analysis.

If you don’t quite remember what they are and how they work, they can make the statistical methods that use them seem that much more obtuse.

So we’re going to take away that fog of confusion about exponents and logs and how they work. (more…)


What is the intercept for each individual in a random slope model?

September 8th, 2017 by

In this video I will answer a question from a recent webinar, Random Intercept and Random Slope Models.

We are answering questions here because we had over 500 people live on the webinar so we didn’t have time to get through all the questions.

If you missed the webinar live, this and the other questions in this series may make more sense if you watch that first. It was part of our free webinar series, The Craft of Statistical Analysis, and you can sign up to get the free recording, handout, and data set at this link:

http://TheCraftofStatisticalAnalysis.com/random-intercept-random-slope-models

 


How to Use the Fitted Mixed Model to Calculate Predicted Values

August 18th, 2017 by

In this video I will answer a question from a recent webinar, Random Intercept and Random Slope Models.

We are answering questions here because we had over 500 people live on the webinar so we didn’t have time to get through all the questions.

If you missed the webinar live, this and the other questions in this series may make more sense if you watch that first. It was part of our free webinar series, The Craft of Statistical Analysis, and you can sign up to get the free recording, handout, and data set at this link:

http://TheCraftofStatisticalAnalysis.com/random-intercept-random-slope-models

 


How to Interpret the Coefficients of Fixed Effects in Random Slope Models

August 17th, 2017 by

In this video I will answer a question from a recent webinar, Random Intercept and Random Slope Models.

We are answering questions here because we had over 500 people live on the webinar so we didn’t have time to get through all the questions.

If you missed the webinar live, this and the other questions in this series may make more sense if you watch that first. It was part of our free webinar series, The Craft of Statistical Analysis, and you can sign up to get the free recording, handout, and data set at this link:

http://TheCraftofStatisticalAnalysis.com/random-intercept-random-slope-models