Marks12345Frequency22844 Marks 1 2 3 4 5 Frequency 2 2 8 4 4 The table above shows the marks obtained in a given test. Find the mean mark.

$\begin{array}{cccccc}\text{Marks}& 1& 2& 3& 4& 5\\ \text{Frequency}& 2& 2& 8& 4& 4\end{array}$

The table above shows the marks obtained in a given test. Find the mean mark.

Answer Details

To find the mean, we need to calculate the sum of all the marks obtained, and then divide by the total number of students who took the test. The sum of all marks obtained is: 1 x 2 + 2 x 2 + 3 x 8 + 4 x 4 + 5 x 4 = 2 + 4 + 24 + 16 + 20 = 66 The total number of students who took the test is: 2 + 2 + 8 + 4 + 4 = 20 Therefore, the mean mark is: 66 / 20 = 3.3 So the answer is option (C) 3.3