=+ A normal quantile plot gives substantial support to the assumption that the population distribution of cadence is approximately normal. A descriptive summary of the data from Minitab follows:

Variable N Mean Median TrMean StDev SEMean cadence 20 0.9255 0.9300 0.9261 0.0809 0.0181 Variable Min Max Q1 Q3 cadence 0.7800 1.0600 0.8525 0.9600