Question

The mean of 7 observations was calculated as 40. It was detected on rechecking that the value 63 was wrongly copied as 36. Find the correct mean? please say this answer

Answer 1

Answer:

7

Step-by-step explanation:

cj 89142 89142 actual rate observation with calculation is 40 it was deducted on reaching that value 63 wrongly copied as 36

Answer 2

Answer:

Hope it will help you

Step-by-step explanation:

Step-by-step explanation:

Sum of the 10 observations:

Mean = 40

Sum = 10 x 40 = 400

Take away the wrongly calculated value:

400 - 15 = 385

Add back the correct value:

385 + 45 = 430

Find the correct mean:

Mean = 430 ÷ 10 = 43