Articles by Very statisticious on Very statisticious

Custom contrasts in emmeans

April 14, 2019 | Very statisticious on Very statisticious

Following up on a previous post, where I demonstrated the basic usage of package emmeans for doing post hoc comparisons, here I’ll demonstrate how to make custom comparisons (aka contrasts). These are comparisons that aren’t encompassed by the built-in functions in the package. Remember that you can explore ... [Read more...]

The log-0 problem: analysis strategies and options for choosing c in log(y + c)

September 18, 2018 | Very statisticious on Very statisticious

I periodically find myself having long conversations with consultees about 0’s. Why? Well, the basic suite of statistical tools many of us learn first involves the normal distribution (for the errors). The log transformation tends to feature prominently for working with right-skewed data. Since log(0) returns -Infinity, a common first ...
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