A shop sells raincoats and umbrellas. The scatter graph shows the monthly sales for 12 months.
200
a) Write down the type of
correlation shown by
the graph
150
XX
X
X
Sales of
raincoats (E)
X
Х
100
х
Х
x
b) The manager expects the
sales of umbrellas next
month to be £70
Draw a line of Lust fit and
use it to estimate the sale
of raincoats next month.
£
X
50
X
X
(3)
0
20
80
100
40
60
Sales of umbrellas (E)
Total marks: 4

Ted and meg have each drawn a line on the scatter plot shown below: the graph shows numbers from 0 to 10 on x and y axes at increments of 1. dots are made at the ordered pairs 1, 8 and 2, 7.5 and 3, 6 and 4, 5.5 and 4.5, 4.8 and 5, 4 and 6, 3.5 and 7, 3 and 8, 1.9 and 9, 1.2 and 10, 0. a straight line labeled line p joins the ordered pairs 0, 8.5 and 10.1, 0. a straight line labeled line r joins the ordered pairs 0, 8.5 and 7.8, 0. which line best represents the line of best fit? line p, because it is closest to most data points line p, because it shows a positive association line r, because it is closest to most data points line r, because it shows a negative association