Explanation

Mean = (Sum of numbers) / (Number of values)  

Mean = (12 + 14 + 16 + 18) / 4  

Mean = 60 / 4 = 15

Last verified on 24-05-2026

Explanation

Mean = (Sum of numbers) / (Total numbers)  

= (10 + 12 + 14) / 3  

= 36 / 3  

= 12  

Last verified on 23-05-2026

Explanation

Mean = (6 + 8 + 10 + 12) ÷ 4

= 36 ÷ 4

= 9

Last verified on 15-05-2026

Explanation

Mean = (5 + 7 + 9) ÷ 3

= 21 ÷ 3

= 7

Last verified on 14-05-2026

Explanation

Find the mean of:

Numbers: 7, 6, 10, 8, 9

Frequencies: 2, 2, 5, 1, 2

Step 1: Multiply each number by frequency

7 × 2 = 14

6 × 2 = 12

10 × 5 = 50

8 × 1 = 8

9 × 2 = 18

Step 2: Sum of products

14 + 12 + 50 + 8 + 18 = 102

Step 3: Total frequency

2 + 2 + 5 + 1 + 2 = 12

Step 4: Mean

Mean = 102 ÷ 12 = 8.5

Last verified on 12-05-2026