Blog Archives

Don’t treat ordinal data as metric — update of movie ratings

January 28, 2018
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Don’t treat ordinal data as metric — update of movie ratings

In a previous post I applied a Bayesian ordered-probit model to movie ratings and showed how the results differ from treating the data as if they were metric. The metric model used frequentist t tests (because that's what most applied researchers would...

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Don’t treat ordinal data as metric — update of movie ratings

January 28, 2018
By
Don’t treat ordinal data as metric — update of movie ratings

In a previous post I applied a Bayesian ordered-probit model to movie ratings and showed how the results differ from treating the data as if they were metric. The metric model used frequentist t tests (because that's what most applied researchers would...

Read more »

April and June workshops in Bayesian data analysis

January 28, 2018
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2018 April 26 - 28. Stats Camp, Brisbane, Australia. Taught by Prof. Michael Kalish.2018 June 11 - 15. Stats Camp, Albuquerque, New Mexico. Taught by Prof. Michael Kalish.2018 June 18 - 22. Global School for Empirical Research Methods, St. Ga...

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April and June workshops in Bayesian data analysis

January 28, 2018
By

2018 April 26 - 28. Stats Camp, Brisbane, Australia. Taught by Prof. Michael Kalish.2018 June 11 - 15. Stats Camp, Albuquerque, New Mexico. Taught by Prof. Michael Kalish.2018 June 18 - 22. Global School for Empirical Research Methods, St. Ga...

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Which movie is rated better? (Don’t treat ordinal ratings as metric)

December 25, 2017
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Which movie is rated better? (Don’t treat ordinal ratings as metric)

When deciding what movie to watch online, have you ever considered the star ratings provided by previous viewers? For example, Amazon.com has a 5-star rating system, in which reviewers can give a movie an ordinal rating from 1 star to 5 stars. Here are...

Read more »

Which movie is rated better? (Don’t treat ordinal ratings as metric)

December 25, 2017
By
Which movie is rated better? (Don’t treat ordinal ratings as metric)

When deciding what movie to watch online, have you ever considered the star ratings provided by previous viewers? For example, Amazon.com has a 5-star rating system, in which reviewers can give a movie an ordinal rating from 1 star to 5 stars. Here are...

Read more »

The skew-normal distribution in JAGS

December 17, 2017
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The skew-normal distribution in JAGS

For a project I'm working on, I decided to try the skew-normal distribution to describe residual noise. JAGS does not have the skew-normal built in, so I used the Bernoulli ones trick to express the skew-normal in a JAGS model specification. This blog ...

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The skew-normal distribution in JAGS

December 17, 2017
By
The skew-normal distribution in JAGS

For a project I'm working on, I decided to try the skew-normal distribution to describe residual noise. JAGS does not have the skew-normal built in, so I used the Bernoulli ones trick to express the skew-normal in a JAGS model specification. This blog ...

Read more »

Graphs of imputed censored y values

December 9, 2017
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Graphs of imputed censored y values

When using JAGS with censored data, the censored values are imputed to be consistent with the parameters of the model and the censoring limits. It's straight forward to record and graph the imputed values. Here are a couple of slides from my workshops ...

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Graphs of imputed censored y values

December 9, 2017
By
Graphs of imputed censored y values

When using JAGS with censored data, the censored values are imputed to be consistent with the parameters of the model and the censoring limits. It's straight forward to record and graph the imputed values. Here are a couple of slides from my workshops ...

Read more »


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