## May 2021

### Handling missing data: Multiple imputation for the applied researcher

A 4-hour workshop taught by Ryan S. Wells, Ph.D. You may also be interested in our increasing web survey response rates workshop. Register Overview Item-missing data is a serious concern for any quantitative researcher. Survey participants regularly skip questions, and administrative data is often incomplete. But what do to about this issue is not always straightforward. Researchers often analyze only complete cases (listwise deletion) or they impute missing information using means or regression analysis. These approaches can lead to biased estimates and artificially small standard…

Find out more »### Inferential statistical analysis techniques using R

A 4-hour workshop taught by Mariola Moeyaert, Ph.D. Register Overview This is the first of four 4-hour workshops on the R statistical programming language. Sign up for the other workshops in the series using the links below: Advanced inferential statistical analysis techniques using R – Part 1 Advanced inferential statistical analysis techniques using R – Part 2 Data visualization using R The R statistical programming language and computing environment is a free, open-source package for statistical analysis. R has become the…

Find out more »## June 2021

### Advanced inferential statistical analysis techniques using R – Part 1

A 4-hour workshop taught by Mariola Moeyaert, Ph.D. Register Overview This is the second of four 4-hour workshops on the R statistical programming language. Sign up for the other workshops in the series using the links below: Inferential statistical analysis techniques using R Advanced inferential statistical analysis techniques using R – Part 2 Data visualization using R The R statistical programming language and computing environment is a free, open-source package for statistical analysis. R has become the de-facto standard in statistics…

Find out more »### Advanced inferential statistical analysis techniques using R – Part 2

A 4-hour workshop taught by Mariola Moeyaert, Ph.D. Register Overview This is the third of four 4-hour workshops on the R statistical programming language. Sign up for the other workshops in the series using the links below: Inferential statistical analysis techniques using R Advanced inferential statistical analysis techniques using R – Part 1 Data visualization using R The R statistical programming language and computing environment is a free, open-source package for statistical analysis. R has become the de-facto standard in statistics…

Find out more »### Data visualization using R

A 4-hour workshop taught by Mariola Moeyaert, Ph.D. Register Overview This is the fourth of four 4-hour workshops on the R statistical programming language. Sign up for the other workshops in the series using the links below: Inferential statistical analysis techniques using R Advanced inferential statistical analysis techniques using R – Part 1 Advanced inferential statistical analysis techniques using R – Part 2 The R statistical programming language and computing environment is a free, open-source package for statistical analysis. R has…

Find out more »### Refresher on multiple regression for the applied researcher

A 6-hour workshop taught by Steve Porter, Ph.D. Regression workshop series discount! Register for this along with our workshops on Logistic Regression: Analyzing binary outcomes and Basics of multilevel modeling: Handling grouped data in research and evaluation for only $550 (would normally cost $700 for all three). If you are interested in the workshop series, email us at mail@percontor.org for discount codes. Register Overview Many researchers have taken a course that covers multiple regression, the statistical workhorse of the social sciences,…

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