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 - OCR - GCSE Maths - Question 9 - 2020 - Paper 1
Question 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.
(a) The shop sold 32 umbrellas in quarter ... show full transcript
Worked Solution & Example Answer: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 - OCR - GCSE Maths - Question 9 - 2020 - Paper 1
Step 1
Complete the graph.
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Answer
The point for quarter 4 of 2019 should be marked at 32 umbrellas sold on the graph. This means placing a point above quarter 4 in the year 2019 at the corresponding height between 30 and 40 on the y-axis.
Step 2
Make one comment about the seasonal variation shown in this graph.
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Answer
The graph indicates that the number of umbrellas sold tends to increase during certain quarters each year, suggesting a seasonal pattern where sales peak in specific seasons, possibly during rainy seasons.
Step 3
Make one comment about the annual variation shown in this graph.
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Answer
The annual variation shows that there is a general upward trend over the years, meaning that the sales in certain quarters tend to increase when comparing one year to another.
Step 4
What assumption has she made?
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Answer
Ling has assumed that the sales in quarter 1 of 2020 will follow the same upward trend as seen in previous years, predicting a consistent demand for umbrellas.
