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The table shows some information about the weights of 50 potatoes - Edexcel - GCSE Maths - Question 2 - 2019 - Paper 2
Question 2
The table shows some information about the weights of 50 potatoes. Weight (w grams) Frequency 10 < w ≤ 20 6 20 < w ≤ 30 21 30 < w ≤ 40 13 40 < w ≤ 50 7 50 < w ≤ 60... show full transcript
Worked Solution & Example Answer:The table shows some information about the weights of 50 potatoes - Edexcel - GCSE Maths - Question 2 - 2019 - Paper 2
Step 1
Write down two things that are wrong with the frequency polygon.
Answer
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The frequency polygon should not be joined with straight lines across intervals. Instead, it should be connected with lines that reflect the data points correctly, forming a smooth curve, especially between the last point at 50 grams.
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The first point plotted at 10 grams is rather than at 6 but should start at the point corresponding to the frequency of 6, which would indicate an increase from 0 to the first value.