Consider the following four box plots (I,ii,iii,iv).

(a) Among the four sets of data, which is most strongly skewed to the left?

(b) Among the four sets of data, which has the smallest standard deviation?

(c) Among the four sets of data, which has the lowest third quartile?

(d) The interquartile range of boxplot iii is approximately (2, 5, 7, 10, 17). Choose a value.

Growth (mm) 18 16 14 10 ii iii iv