Question

The table shows the marks scored out of 100 in three subjects by a student at the school.

The mean of the marks scored by the student is .

• A. 76
• B. 77
• C. 78
• D. 80

Answer 1

The correct option is C 78

Mean is an average of the given numbers.
i.e, $\text{Mean =}\frac{\text{Sum of all the observations}}{\text{Total number of observations}}$



Sum of all observations = 85 + 73 + 76
= 234
Total number of observations = 3
$\text{Mean =}\frac{234}{3}=78$

$\therefore$ The mean of the marks scored by the student is 78.