Question

Which of the following type of sampling is an example of 'stratified random sampling'? A. Collecting...

Which of the following type of sampling is an example of 'stratified random sampling'?

A.

Collecting data on retail store sales by asking for volunteers from one country
B.

Collecting data on retails store sales by obtaining data from stores selected by your boss
C.

Collecting data on retail sales across the globe with stores selected at random
D.

Collecting data on retail store sales by country and taking a random sample within each country for data
Math   Statistics-And-Probability   
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Answer #1

The correct scenario for the stratified random sampling is option,

D) Collecting data on retail store sales by country and taking a random sample within each country for data.

Explanation : In stratified random sampling we divide the whole population into homogeneous group these groups are called as strata. Then select a random sample from each group. This is the technique for stratified random sampling.

In our scenario the retail store sales by country we divided the whole country in homogeneous group i.e State wise. and then select the sample from each group at random.

This procedure is called as stratified random sampling.

Other options or scenario are not appropriate for stratified random sampling.

Hope you understood then please RATE POSITIVE ?.

Thank you.

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