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Marcus Morrisey

I'm a researcher with a passion for quantitative data. I was trained as an empirical psychologist but I also have extensive experience in program evaluation, data science, sales, management, and education. I enjoy getting a message across in an intuitive way. I'm excited about data, statistics, and a great visualization.

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13 Does the Tukey HSD test correct for multiple comparisons? Jul 30 '12
12 Whether to use r-square or adjusted r-square with a small sample size that may represent the entire population? Aug 14 '12
11 Is Fisher's LSD as bad as they say it is? Jul 9 '14
10 What does lsmeans report for a generalized linear model, such as Poisson mixed model (fit with glmer)? Apr 24 '15
6 Can anyone provide a peer reviewed reference for the calculation of least squares means as implemented in the R package lsmeans? Oct 30 '14
4 Which statistical analysis should I use for this experiment? Jul 24 '12
4 How to analyze factors that have missing by design values for certain observations? Jul 24 '12
4 What statistical test is needed here? Feb 27 '14
3 Using ANOVA and t-tests with pre-aggregated data Aug 17 '12
3 Post hoc ANOVA following a significant ANOVA? Nov 9 '12
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