Question

The graph below shows marks obtained by some students in two tests.

What is the average of the marks scored by Vinsta in two tests?

• A. 70
• B. 130
• C. 65
• D. 60

Answer 1

The correct option is C 65

From the given double bar graph, it can be noted that the marks obtained by Vinsta in the two tests are 60 and 70.
$\text{Average}=\frac{\text{Sum of all observations}}{\text{Total number of observations}}$
$\therefore \text{Average of marks obtained}=\frac{\text{Sum of the marks obtained in two tests}}{\text{Number of tests}}$
= $\frac{60+70}{2}$
= $\frac{130}{2}$
= $65$
Therefore, average marks scored by Vinsta is 65.