Question

Which of the following are reasons to sample?

	a.	the physical impossibility of checking all items in the population
	b.	the sample results are better than results on populations
	c.	a population does not exist
	d.	to contact the whole population would be time-consuming
	e.	the destructive nature of some tests
	f.	the sample results are adequate
	g.	the cost of studying all the items in a population may be prohibitive

Answer 1

Which of the following are reasons to sample?

	a.	the physical impossibility of checking all items in the population
	c.	a population does not exist
	d.	to contact the whole population would be time-consuming
	e.	the destructive nature of some tests
	g.	the cost of studying all the items in a population may be prohibitive

Explanation:

The possible reasons to sample are given above. We use sample for saving time, energy, expenditure, manpower, etc. Although sampling results are not good enough as populations do, but study using entire population is not practically possible, and that’s why we are using sampling technique.