A class teacher has the following absentee record of $40$ students of a class for the whole term. Find the mean number of days a student was absent.
Number of days $0 - 6$ $6 - 10$ $10 - 14$ $14 - 20$ $20 - 28$ $28 - 38$ $38 - 40$
Number of students $11$ $10$ $7$ $4$ $4$ $3$ $1$

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A class teacher has the following absentee record of

40

students of a class for the whole term. Find the mean number of days a student was absent.

Number of days	$0 - 6$	$6 - 10$	$10 - 14$	$14 - 20$	$20 - 28$	$28 - 38$	$38 - 40$
Number of students	$11$	$10$	$7$	$4$	$4$	$3$	$1$

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Text solutionVerified

\Rightarrow

M e an (\overline{x}) = \frac{\sum f _{i} x _{i}}{\sum f _{i}} = \frac{499}{40} = 12.5

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Question Text	A class teacher has the following absentee record of $40$ students of a class for the whole term. Find the mean number of days a student was absent.
Answer Type	Text solution:1
Upvotes	150