Sampling Methods

[Agent Smith]

What I just read sequitur ...

1. Sometimes a simple random sample may not be representative (?)

So different techniques are required

2. Stratified random sample. Say a school has juniors and seniors and we want both these groups represented in our study. So we take random samples from both groups.

2. Cluster sampling. Say in the same school there are some clubs that have juniors and seniors in numbers that reflect those in the population. We randomly select some of these clubs and sample all the members.

Is this correct? Can someone provide a better example?

 

[blamocur]

I don't think the list in your post is complete.
Have you tried to search the net for answers?

 

[Agent Smith]

That's funny because math help sites like this one pop up in Google search.

 

[khansaheb]

That's funny because math help sites like this one pop up in Google search.

Sampling Methods | Types, Techniques & Examples

When you conduct research about a group of people, it’s rarely possible to collect data from every person in that group. Instead, you select a sample. The

www.scribbr.com

There is no substitute for attentive reading - in any language!!!

 

[Agent Smith]

Sampling Methods | Types, Techniques & Examples

When you conduct research about a group of people, it’s rarely possible to collect data from every person in that group. Instead, you select a sample. The

www.scribbr.com

There is no substitute for attentive reading - in any language!!!

A fun link to explore. Gracias. Cogito I got it right. It's super-complex. Poor statisticians.