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Chen has this information about the time that it took an operator at a call centre to answer each of 90 calls - Edexcel - GCSE Maths - Question 13 - 2022 - Paper 3
Question 13
Chen has this information about the time that it took an operator at a call centre to answer each of 90 calls. Time (seconds) | Cumulative frequency ---------------... show full transcript
Worked Solution & Example Answer:Chen has this information about the time that it took an operator at a call centre to answer each of 90 calls - Edexcel - GCSE Maths - Question 13 - 2022 - Paper 3
Step 1
Write down two different things that are wrong with this graph.
Answer
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The label for the horizontal axis is missing. The graph does not indicate what the x-axis represents, making it unclear for readers.
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The graph has not been plotted at the top end of the class intervals, as the points should be placed at the boundaries (10, 20, 30, 40, and 50 seconds), but they are incorrectly positioned at the midpoints.