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Question 115

For the 200 ages in OCR Large Data Set 9, the cumulative frequencies below 20, 30, 40 and 50 years are 32, 58, 97 and 123 respectively.

a.

Find the number of individuals aged from 30 up to but not including 40.

[1]
b.

State the age class containing the median.

[2]
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2 Statistics Questions

  1. A Level
  2. /Maths
  3. /2 Statistics

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