Find the first quartiles for the following data.
$8, 11, 20, 10, 2, 17, 15, 5, 16, 15, 25, 6, 5$

2

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6

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8

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5

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Solution

The correct option is D $5$
First arrange the data set in order.
$2, 5, 5, 6, 8, 10, 11, 15, 15, 16, 17, 20, 25$
Here the median is the middle number $= 11$
So, the first quartile is the median of the lower half of the data.
Therefore, the first quartile is $5$ .

Suggest Corrections

$x$	$3$	$4$	$5$	$6$	$7$
$f$	$12$	$35$	$52$	$41$	$18$