Monday, March 16, 2009

What's the Right Analysis for this Data?

If you've ever had trouble getting started doing a data analysis, you are certainly not alone. Should I run an ANOVA, MANOVA, ANCOVA, or MANCOVA? Should that have been a McNemar's test, a Kruskal-Wallis, or a Mann-Whitney U?

To at least pin down the statistical test you should run, consult these excellent flowcharts by Marylyn Ritchie, Jason Moore, and Tricia Thornton-Wells. They have been stuck to my wall for years, and whenever I have a new type of data to look at, I consult them to get headed in the right direction!


UPDATE 2009-04-06: Be sure to check out the follow up to this post, What's the Right Analysis part II, for a link to example applications of these methods with the appropriate Stata code.

1 comment:

  1. Tricia A. Thornton-WellsApril 6, 2009 at 11:11 AM

    Heck, I go back to look at them, myself! They are part of this book chapter:
    Moore JH, Thornton TA, Ritchie MD. Basic statistics. In: Dracopoli NC, Haines JL, Korf BR, Moir DT, Morton CC, Seidman CE, Seidman JG, Smith DR (eds): Current Protocols in Human Genetics, New York: Wiley-Liss, Inc., 2003.


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