00:01
The sampling technique used in each stage of the multi -stage sampling plan is, means the first stage, here it is, stratified sampling, and here the second stage, it is cluster sampling.
00:27
Now, in the first case, the company's claims are classified according to seven geographical regions.
00:33
This process is an example of stratified sampling, where the population is given.
00:38
Divided into subgroups which we call as strata based on a common characteristic.
00:42
Now in this case the common characteristic is what? it is geographical region and a sample is drawn from each stratum.
00:48
The purpose of this stratified sampling is to ensure that each subgroup is adequately represented in the sample.
00:54
Means each one should get a good chance.
00:57
Now if we talk about the second case which is cluster sampling...