Can stratified sampling be non-random, random or both?

Watch
Chocolate Hobnob
Badges: 9
Rep:
?
#1
Report Thread starter 1 month ago
#1
I'm revising Biology but I think this is more of a Stats issue.

Stratifed sampling comes under the heading non-random in the OCR A Bio textbook, but I would have thought it is in part random and non-random. If your strata are different sizes and you're taking a proportionate number of your total samples from each, then going back to the original population each observation is not equally likely to be selected, hence I can see the logic behind calling it a non-random technique. But then within each stratum you generate your samples randomly and need a complete sampling frame? Different sources are saying different things and I am SO CONFUSED lol
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

Regarding Ofqual's most recent update, do you think you will be given a fair grade this summer?

Yes (144)
30%
No (336)
70%

Watched Threads

View All