Choosing among summary statistics
pBecause the mean is not resistant
to outliers or skew, use it to describe distributions that are fairly
symmetrical and don’t have outliers.
à Plot the mean and use the standard deviation for error bars.
à Plot the mean and use the standard deviation for error bars.
pOtherwise, use the median in the five-number
summary, which can be plotted as a boxplot.
Box
plot Mean ± s.d.
