What is Kurtosis?

In this video I explain the concept of kurtosis. I explain the terminology for kurtosis coined by Karl Pearson, a number of common misconceptions related to kurtosis, how kurtosis is calculated for a sample, and how kurtosis is interpreted for assumptions about normality and the detection of outliers.
DeCarlo (1997) On the Meaning and Use of Kurtosis
www.columbia.edu/~ld208/psymet...
Westfall (2014) Kurtosis as Peakedness; 1905-2014 R.I.P
www.ncbi.nlm.nih.gov/pmc/arti...