Question

Find mean of 10,20,30,40 and 50.

a. Add 10 to each value and find the mean.
b. Subtract 10 to each value and find the mean.

Answer 1

Answer:

a-answer is 40

b-answer is 20

Step-by-step explanation:

a-when we add 10 to all no. the no. We get are-20,30,40,50,60

Finding a mean-20+30+40+50+60÷5

So we get ans as 40

B)-when we subtract 10 from all no. We get no.s 0,10,20,30,40

Finding a mean-0+10+20+30+40÷5 so we get ans as 20

Answer 2

Answer:

Mean of the given numbers is 30, a) 40, b) 20

Step-by-step explanation:

Formula used for calculating,

Mean = Sum of the terms/ Number of terms

Therefore, the mean of 10,20,30,40 and 50 is,

Mean = 10+20+30+40+50 / 5

          = 30

a) Adding 10 to each value gives us 20, 30, 40, 50 and 60.

Mean = 20+30+40+50+60 / 5

        = 40

b) Subtracting 10 from each value gives us 0, 10, 20, 30 and 40.

Mean = 0+10+20+30+40 / 5

          =20