Marks234Frequency44y Marks 2 3 4 Frequency 4 4 y The table above shows the frequency distribution of marks obtained by a group of students. If the total mar...

Question 1 Report

$\begin{array}{cc} Marks & 2 & 3 & 4 \\ Frequency & 4 & 4 & y \end{array}$

The table above shows the frequency distribution of marks obtained by a group of students. If the total mark is 48, find the value of y.

Answer Details

(2 x 4) + (3 x 4) + (4 x y) = 48
8 + 12 + 4y = 48
4y = 48 - 20

\frac{4 y}{4}

\frac{28}{4}

y = 7