Further Mathematics Paper 2, WASSCE (SC), 2017

Question 6

 

The table shows the heights in cm of some seedlings in a certain garden.

 

 

Height (cm)

 

36 – 40

 

41 – 45

 

46 – 50

 

51 – 55

 

56 – 60

Frequency

3

9

21

12

5

  1. Draw a cumulative frequency curve for the distribution.
  2.   Using the curve in 6(a), find the semi-interquartile range.

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Observation