The series of observation are taken across a river under the same identical conditions.
|
Point |
Reading (m) |
|
1 2 3 4 |
3.125 3.250 3.350 3.010 |
The probable error of the mean of number of observations of the same quantity is
1
± 0.0324 metre
2
± 0.0998 metre
3
± 0.0499 metre
4
± 3.020 metre