The scores of twenty students in a test are as ... - WAEC Mathematics 2015 Question
The scores of twenty students in a test are as follows: 44, 47, 48, 49, 50, 51, 52, 53, 53, 54, 58, 59, 60, 61, 63, 65, 67, 70, 73, 75. Find the third quartile.
A
62
B
63
C
64
D
65
correct option: b
Third quartile Q3 = \(\frac{3}{4}\)Nth
= \(\frac{3}{4}\) x 20th score
= 15th score
= 63
= \(\frac{3}{4}\) x 20th score
= 15th score
= 63
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