Question

The most common probabilistic sampling approach is:

A. simple random sampling B. convenient sampling C. complex sampling D. error sampling

Answer 1

Correct answer is (A) Simple random sampling.

Please read below for explanation:

There are two types of sampling:

1. Probability Sampling
2. Non probability sampling

In a probability sampling, the samples must be subjected to some type of random selection. The samples have to be such that every member in the sample enjoys same probability of selection. There is no preference or bias towards any item. (This is the exact definition of randomness or arbitrariness).Thus samples have to be random. Hence simple random sampling is the most common probabilistic sampling approach.