(a(i))[1]
Use the cumulative frequency diagram to obtain an estimate of the median.
(a(ii))[1]
Use the cumulative frequency diagram to obtain an estimate of the lower quartile.
(a(iii))[1]
Use the cumulative frequency diagram to obtain an estimate of the interquartile range.
(b)[1]
Make one statement comparing the distribution of the distances covered by the males with that of the females.
(c)[2]
Find the probability that he travelled more than 50 km.
(d(i))[2]
Use the cumulative frequency diagram to fill in this frequency table.
(d(ii))[4]
Calculate an estimated mean distance travelled.