Comparing box-and-whisker graphs - CSSI

Task goals

• Recall what C, S, S, and I each stand for in the CSSI framework for comparing box-and-whisker plots.
• Read the five-number summary (minimum, lower quartile, median, upper quartile, maximum) off a box-and-whisker plot.
• Calculate and compare the interquartile range (IQR) and range as measures of spread.
• Identify a distribution's shape (left skew, right skew, or symmetric) from the relative size of the box and whisker sections.
• Identify outliers and other interesting or unusual features on a box-and-whisker plot.
• Compare two or more distributions using centre, shape, spread, and interesting features together, and justify conclusions drawn from the comparison.