Consider simple random sampling with replacement from a population of size N. The number of samples of size n is
The coefficient of range of the weights of 10 students from the following data:
41,20,15,65,73,84,53,35,71,55 is
In simple random sampling of n units from a population of N units the quantity [1 (n/N)] is called the
If x and y are uncorrelated variables then this implies :
In the construction of cost of living index, commodities are selected by :
For determination of mode and median graphically, one considers: