Question

Solve the following two parts:

1- Do you agree with the following: “Equal probability of selecting all possible samples doesn’t always produce simple random sample”, justify your answer?

2- Discuss the use of sampling in estimating sensitive questions?

Answer 1

Yes , I agree with the statement, That equal probability of selecting all possible samples doesnt always produce simple random sample. As when the population is not homegeneous then also the probability of selecting all possible sample have equal probability but still we use either stratified sampling or cluster sampling

2. Sampling (i.e. selecting a sub-set of a whole population) is often done for reasons of cost (it’s less expensive to sample 1,000 television viewers than 100 million TV viewers) and practicality (e.g. performing a crash test on every automobile produced is impractical). In any case, the sampled population and the target population should be similar to one another. Sampling Plans. . . A sampling plan is just a method or procedure for specifying how a sample will be taken from a population. We will focus our attention on these three methods: • Simple Random Sampling, • Stratified Random Sampling, and • Cluster Sampling.r stratified sampling or cluster sampling.

Thus sampling is very usefull in estimating sensitive questions as it will decide how to select the sample from the population.