The mean of 15 observations is 29. If one of the observations taken mistakenly -25 instead of 25. The % change in the value of mean is ________
1
7.42
2
11.48
3
16.79
4
19.53
The mean of 15 observations is 29. If one of the observations taken mistakenly -25 instead of 25. The % change in the value of mean is ________