The mean of n observations is X. If the first item is increased by 1, the second by 2 and so on, then the new mean is:
a) X + n
b) X + n/2
c) X + (n+1)/2
d) X + (n-1)/2
The mean of n observations is X. If the first item is increased by 1, the second by 2 and so on, then the new mean is:
a) X + n
b) X + n/2
c) X + (n+1)/2
d) X + (n-1)/2
a) X + n
b) X + n/2
c) X + (n+1)/2
d) X + (n-1)/2