(a(i))[2]
Finish the scatter diagram. The first five points have already been plotted for you.
(a(ii))[1]
State the type of correlation shown by the scatter diagram.
(a(iii))[1]
Add a line of best fit to the scatter diagram.
(a(iv))[1]
A further reading is taken at a height of 1000\,\text{m}. Use your line of best fit to estimate the temperature at this height.
(b(i))[3]
Calculate an estimated mean time.
(b(ii))[1]
The information is displayed in a histogram. The bar for $5.5 < h \leq 6.5$ has a height of $8\,\text{mm}$. Work out the height of the bar for $8 < h \leq 8.5$.