The advantages of using probability sampling are
A. Perfect control on extraneous variables
B. Convenient when sample is very small
C. Absense of sampling biasness
D. Lesser degree of judgement
E. Faster and cost effective
Choose the correct answer from the options given below:
1
A, C and D only
2
B, D and E only
3
A, D and E only
4
C, D and E only