Search any question & find its solution
Question:
Answered & Verified by Expert
Number of telephone calls received in 245 succesive one minute intervals at an exchange is given below in the following frequency distribution. $\quad[2014-I]$ \begin{array}{|c|c|c|c|c|c|c|c|c|}
\hline Number of calls & 0 & 1 & 2 & 3 & 4 & 5 & 6 & 7 \\
\hline Frequency & 14 & 21 & 25 & 43 & 51 & 40 & 39 & 12 \\
\hline
\end{array}
What is the mean of the distribution?
Options:
\hline Number of calls & 0 & 1 & 2 & 3 & 4 & 5 & 6 & 7 \\
\hline Frequency & 14 & 21 & 25 & 43 & 51 & 40 & 39 & 12 \\
\hline
\end{array}
What is the mean of the distribution?
Solution:
1770 Upvotes
Verified Answer
The correct answer is:
$3.76$
$\frac{\Sigma \mathrm{fx}}{\mathrm{N}}=\frac{922}{245}=3.76$
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.