(a(i))[2]
The first six points are already on the scatter diagram. Complete it.
(a(ii))[1]
Sketch a line of best fit.
(a(iii))[1]
Estimate the height of a $14$-year-old boy from your line of best fit.
(a(iv))[1]
Simon is $22$ years old. Explain why you should not use your line of best fit to estimate his height.
(b(i))[2]
Calculate the percentage of girls whose height is greater than $145\text{ cm}$.
(b(ii))[3]
Calculate an estimated mean height.