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Consider the following randomly arranged in 3 classes data of a sample. Classes frequency 5-9 9 10-14 25 15-19 8 Plot the cumulative histogram and...

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Question

Statistics

Consider the following randomly arranged in 3 classes data of asample.

Classes

frequency

5-9

9

10-14

25

15-19

8

  1. Plot the cumulative histogram and the polygon and interpret.(2.5+2.5+2.5=7.5)
  2. Determine the Range (5)
  3. Determine the mean and the median. (7.5+7.5=15)
  4. Determine the standard deviation. (7.5)
  5. Determine the relative frequency and determine the percentageof observation having a value equal or lower than 12. (5+2.5)

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