Question 8 The mean of the following frequency distribution is 50 but the frequencies f1 and f2 in classes 20-40 and 60-80, respectively are not known. Find these frequencies, if the sum of all the frequencies is 120. Class0−2020−4040−6060−8080−100Frequency17f132f219

Question 8 The mean of the following frequency distribution is 50 but

1.	Question 8 The mean of the following frequency distribution is 50 but the frequencies f1 and f2 in classes 20-40 and 60-80, respectively are not known. Find these frequencies, if the sum of all the frequencies is 120. Class0−2020−4040−6060−8080−100Frequency17f132f219
Answer» Question 8 The mean of the following frequency distribution is 50 but the frequencies $f_{1}$ and $f_{2}$ in classes 20-40 and 60-80, respectively are not known. Find these frequencies, if the sum of all the frequencies is 120. $\begin{matrix} C l a s s & 0 - 20 & 20 - 40 & 40 - 60 & 60 - 80 & 80 - 100 F r e q u e n c y & 17 & f_{1} & 32 & f_{2} & 19 \end{matrix}$