4MA1/2H Jun 2019, Question 1: Estimating the Mean for Grouped Data
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2H (Higher) · Calculator · 4 marks
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The question, in short
Using the grouped frequency table for 48 sunflowers with heights in cm, calculate an estimate of the mean height.
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Solution · 4 marks
- 195 × 8 = 760
- 2105 × 12 = 1260
- 3115 × 15 = 1725
- 4125 × 10 = 1250
- 5135 × 3 = 405
- 6760 + 1260 + 1725 + 1250 + 405 = 5400
- 75400 ÷ 48 = 112.5
Answer112.5
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