Q) Calculate the mean of the following data : $\hline\begin{tabular}{|c|c|c|c|c|c|}\hlineMarks obtained & 0-10 & 10-20 & 20-30 & 30-40 & 40-50 \\\hlineNumber of students & 12 & 23 & 34 & 25 & 6 \\\hline\end{tabular}$

Let’s re-arrange the data with midpoint of each class, frequency, and multiply midpoint with frequency: We know that, mean of grouped data is given by: Mean of grouped data = $(\frac{\sum f_x}{\sum f})$ Therefore, Mean value = $\frac{2400}{100}$ = 24 Hence, the mean value of the given data is 24. Please do press "Heart" button if you liked the solution.