begin array c c No amp 0 amp 1 amp 2 amp 3 amp ... - JAMB Mathematics 2011 Question
\(\begin{array}{c|c} No & 0 & 1 & 2 & 3 & 4 & 5 \ \hline Frequency & 1 & 4 & 3 & 8 & 2 & 5 \end{array}\). From the table above, find the median and range of the data respectively.
A
(8,5)
B
(3, 5)
C
(5 , 8)
D
(5 , 3)
correct option: b
Median = (\frac{\sum fx}{\sum f})
(\begin{array}{c|c}
No & 0 & 1 & 2 & 3 & 4 & 5 \ F & 1 & 4 & 3 & 8 & 2 & 5 \ fx & 0 & 4 & 6 & 24 & 8 & 25 \end{array})
(\sum fx) = 0 + 4 + 6 + 24 + 8 + 25 = 67
(\sum f) = 23
Median = (\frac{\sum fx}{\sum f}) = (\frac{67}{23}) = 2.913
= (\approx) 3
Range = 5 - 0 = 5
(3, 5)
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