Question

In twelve classes of a school, the number of students are as follows: 35, 38, 33, 33, 32, 35, 38, 31, 35, 37, 30, 31

Find the mean and mode respectively.

1. 35, 34
2. 34, 35
3. 36, 35
4. 34, 33

Answer 1

Correct Answer - Option 2 : 34, 35

Given:

35, 38, 33, 33, 32, 35, 38, 31, 35, 37, 30, 31

Concept used:

Mode is the most repeated value in a data

Formula used:

Mean = Sum of observations / Number of observations

Calculations:

Arranging the observations in ascending order

30, 31, 31, 32, 33, 33, 35, 35, 35, 37, 38, 38

Mean = (30 + 31 + 31 + 32 + 33 + 33 + 35 + 35 + 35 + 37 + 38 + 38)/12

⇒ 34

In the given data, most repeated value

⇒ Mode = 35

∴ The mean and mode is 34 and 35 respectively