• Definition.

• It is the process of selecting a subset of apopulation in order to obtain informationregarding a phenomenon in a way thatrepresents the entire population

• It is the process of obtaining

information about an entire

population by examining only a

part of it.

NEED FOR SAMPLING.

• Economical:

• It is not possible and economical for

researchers to study an entire population.

With the help of sampling , the researchers

can save lot of time , money and resources to

study a phenomenon..

Population is the aggregation of all the unit in which researcher is interested.

Population is the largest collection of items that are interested to study

One population can have several samples with different sizes

Population is the base for samples.

The population can exist without a sample,.

Sample is a subset of a

population.

Sample should represent

the population with fewer but

sufficient number of items

A sample may consist of

two or more items that have

been selected out of the

population

Sample represents the

population.

But, sample may not exist

without population