Question

formula of mean and median

Answer 1

Mean= Sum of all observations / total number of observations .
Median = If it is odd then,
n+1/2
here n is the no. of observations.

Answer 2

mean=[sum of observations]/[no.of observations]
if no. of observations is n
and n is an odd no. median =(n+1)/2th observations
and n is an even no. median=[(n/2)th observations+ (n/2 +1)th observations]