ClassFrequency1−526−10411−15516−20221−25326−30231−35136−401 C l a s s F r e q u e n c y 1 − 5 2 6 − 10 4 11 − 15 5 16 − 20 2 21 − 25 3 26 − 30 2 31 − 35 1 3...

Assessment: JAMB UTME - Mathematics - 1993 Subject: General Mathematics

Question 1 Report

$\begin{array}{cc} C l a s s & F r e q u e n c y \\ 1 - 5 & 2 \\ 6 - 10 & 4 \\ 11 - 15 & 5 \\ 16 - 20 & 2 \\ 21 - 25 & 3 \\ 26 - 30 & 2 \\ 31 - 35 & 1 \\ 36 - 40 & 1 \end{array}$

Find the median of the observation in the table given.

11.5

12.5

14.0

14.5

Answer Details

Median = L1 + (

\frac{E f}{f m}

) - fo

\frac{\sum f}{2}

\frac{20}{2}

= 10, L1 = 10.5, fo = 6, fm = 5
Median = 10.5 +

\frac{(10 - 6)}{5}

5
= 10.5 + 4
= 14.5

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Representation Of Data

Measures Of Location

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ClassFrequency1−526−10411−15516−20221−25326−30231−35136−401 C l a s s F r e q u e n c y 1 − 5 2 6 − 10 4 11 − 15 5 16 − 20 2 21 − 25 3 26 − 30 2 31 − 35 1 3...

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