(a)[4]
Calculate an estimate of the mean time taken.
(b(i))[2]
Fill in this cumulative frequency table.
(b(ii))[3]
Draw a cumulative frequency diagram to show the time taken.
(b(iii)(a))[1]
the median.
(b(iii)(b))[2]
that inter-quartile range.
(b(iii)(c))[2]
the 35th percentile.
(c(i))[2]
Complete the table shown above.
(c(ii))[3]
Calculate the heights of the other two blocks.