Question

The marks obtained by 10 students of class 7th in a unit test are 11, 17, 20, 6, 9, 24, 18, 15, 23, 12. Find the mean.​

Answer 1

Answer:

15.5

Step-by-step explanation:

$\frac{11 + 17 + 20 + 6 + 9 + 24 + 18 + 15 + 23 + 12}{10} = \frac{155}{10} = 15.5$

Answer 2

Answer:

13.5

Step-by-step explanation:

How to Find the Mean. The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.