(a)[2]
Give the meaning of variation.
(b(i))[1]
State the frequency of adults whose hand span falls in the 19.0-19.9 cm class in Fig. 4.2.
(b(ii))[1]
State which hand span interval occurs most often.
(c)[2]
State the type of variation shown in Fig. 4.2 and explain the evidence for your choice.