The MuSigma Webinar Series seeks to provide a forum for the presentation and discussion of topics relevant to today’s practicing actuaries, and to give actuaries another option when pursuing continuing education in organized activities.
It’s our goal each month to bring to the actuarial community a webinar and a speaker in order to provide topical, timely, and free access to quality continuing education opportunities.
You can register for the next webinar at
If you have suggestions for an upcoming webinar, or would like to volunteer to present a topic, please contact Alex Walrath at

Upcoming Webinar

Thursday, February 4th, 2021 2:00p EST / 11:00a PST

Get The Most Out of Your Test Data

Speaker: Chris Gross, Gross Consulting


The data not used in parameterizing your model is very valuable. Unleash the value in the out-of-sample data in both its validation and test roles. Chris will discuss the following approaches:

  • Bootstrap samples to provide statistical tests of the difference between alternative models, without assuming an underlying distribution
  • Measurement not only of the fit at a granular level, but also measurement of bias, most easily seen at an aggregated level
  • Provide empirical distributions of residuals, capturing process, parameter, and model risk, and reflecting differences in the distribution across different variables. Use bootstrapping techniques to flesh out the distribution.

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Watch Previous Webinars

Presented by Gross Consulting, the MuSigma Webinar Series is an excellent opportunity for actuaries and insurance professionals to engage in free, interactive, and relevant content designed to provide quality continuing education.