Find the lower quartile of the distribution illustrated by the cumulative frequency curve
MATHEMATICS
WAEC 2016
Find the lower quartile of the distribution illustrated by the cumulative frequency curve
- A. 17.5
- B. 19.0
- C. 27.5
- D. 28.0
Correct Answer: B. 19.0
Explanation
Lower quartile,
Q1 = \(\frac{1}{4}\)Nth term
= \(\frac{1}{4}\) x 600th term
= 150th term
= 15.5 + 3 + 0.5
= 19
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