NEWAll India NCERT Mock Test Series for JEE & NEET is now live!Take Free Test
| Exercise 13.1

Question 8

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 days0661010141420202828383840Number of students11107443
\begin{array}{|c|c|c|c|c|c|c|c|}

\hline
\text{Number of days} & 0 - 6 & 6 - 10 & 10 - 14 & 14 - 20 & 20 - 28 & 28 - 38 & 38 - 40 \\
\hline
\text{Number of students} & 1 & 1 & 10 & 7 & 4 & 4 & 3 \\
\hline
\end{array}
Jump to: