Higher November 2020 Paper 4 Q9

OCRHigherCurrent spec4 marksTime-Series

9 The graph shows the number of umbrellas sold in Ling’s shop for each quarter from quarter 1 of 2017 to quarter 3 of 2019.

Time-series graph of number of umbrellas sold (0 to 50) for each quarter from quarter 1 of 2017 to quarter 3 of 2019, with points joined by dashed lines. Values: 32, 21, 8, 24, 38, 23, 10, 28, 44, 24, 13
(a) The shop sold 32 umbrellas in quarter 4 of 2019.

Complete the graph. [1]

(b) Make one comment about the seasonal variation shown in this graph. [1]
(c) Make one comment about the annual variation shown in this graph. [1]
(d) Ling predicts that she will sell 50 umbrellas in quarter 1 of 2020.

What assumption has she made? [1]