# The Craft of Statistical Analysis Webinars

### Interpreting Linear Regression Coefficients: A Walk through Output

September 26th, 2011 by

In this webinar we’re doing something a little different – rather than give you an overivew of a topic, we will interpret together the regression coefficients table from a real data set.

This data set is from the dissertation of a client I worked with a few years ago.  She has graciously allowed us to use her data as an example.  It’s a great example because it includes many of the coefficients that can be really tricky

• a categorical dummy-coded variable
• an interaction between the categorical and a continuous variable
• centering

This webinar has already taken place. You can gain free access to a video recording of the webinar at our The Craft of Statistical Analysis website.

### Binary, Ordinal, and Multinomial Logistic Regression for Categorical Outcomes

January 26th, 2011 by

Ever discover that your data are not normally distributed, no matter what transformation you try? It may be that they follow another distribution altogether. During this teleseminar, Karen Grace-Martin explained

• how these regression models differ from Ordinary Linear Regression
• the type of data for which each is appropriate
• how to interpret the coefficients and odds ratios from each

This webinar has already taken place. You can gain free access to a video recording of the webinar by completing the form below.

Statistically Speaking members can access this recording from the Analysis Toolbox Resources page at the Programs Center without signing up.

### The First Three Steps to Performing Any Statistical Model: Define and Design Webinar

September 29th, 2009 by

The next webinar in the Craft of Statistical Analysis series is:

The First Three Steps to Performing Any Statistical Model: Define and Design

All statistical modeling–whether ANOVA, Multiple Regression, Poisson Regression, Multilevel Model–is about understanding the relationship between independent and dependent variables. The first 3 steps in modeling set up the entire rest of the analysis.

This webinar will go into more detail on these first three steps:

1. Write out research questions in theoretical and operational terms

2. Design the study or define the design

3. Choose the variables for answering research questions and determine their level of measurement

It is the way you do these three steps that determines the rest of the analysis. Doing them explicitly and doing them well can save you days of time and endless frustration.

This webinar has already taken place, but the recording of it is available in our Statistically Speaking membership program.

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What’s a The Craft of Statistical Analysis Webinar?  It’s a regular webinar series for researchers to help you hone the craft of statistical analysis.  Each webinar is about a single statistical topic that is often confusing, misunderstood, or not well known to researchers.  Check it out and pass the word along–they’re free!