Question

the mean of 8 observation was found to be 25, however later it was found that one observation 22 was misread as 42 find the actual mean ​

Answer 1

Answer:

22.5

Step-by-step explanation:

Mean = Sum of observations/No. of Observations

=> x/8 = 25

Therefore, x = 200

New Sum = 200 - 20 = 180

Therefore, new mean = 180/8 = 22.5

Hope it helps you.........