Question

What’s is the mad of 8,7,9,3,4,9,2

Answer 1

2.5

Explanation:

Mean: 8 + 7 + 9 + 3 + 4 + 9 + 2 = 42/7 = 6

8 - 6 = 2

6 - 7 = 1

9 - 6 = 3

6 - 3 = 3

4 - 6 = 2

9 - 6 = 3

2 - 6 = 4

2 + 1 + 3 + 3 + 2 + 3 + 4 = 18/7 = 2.5

Answer 2

Answer: 2.5714

Sort

Before: 8,7,9,3,4,9,2

After: 2, 3, 4, 7, 8, 9, 9

Add

2+3+4+7+8+9+9=42

Divide

42÷7=6

Subtract "data value – mean"

2-6=-3

3-6=-3

4-6=-2

7-6=1

8-6=2

9-6=3

9-6=3

Add

-3+-3+2+1+2+3+3=5

Divide then get: 2.5714