Question

the means of eight number is found to be 57. later it was discovered that one observation 48 was misread as 84.find the new means​

Answer 1

Answer:

52.5

Step-by-step explanation:

Incorrect Mean = 57

Sample space = 8

(8×57 -84 + 48)/8 = 57 - (36)/8 = 57-4.5 = 52.5

Answer 2

Answer:

21

Step-by-step explanation:

84

$57 - 84 + 48 = answer \\ 21$