The mean of 25 values was 190.
The mean of 25 values was 190. It was detected on rechecking that one value 165 was wrongly copied as 130 for the computation of the mean. Find the correct mean.
Answer/Solution
191.4
Steps/Work
Corrected mean = 190×25−130+165/25
= 4750+35/25
=4785/25=191.4
Answer D
= 4750+35/25
=4785/25=191.4
Answer D