11 3 Probability sampling

[@AniAni-vt9pn]

I'm a TA for a Quantitative Data Collection class & I absolutely loved your lecture! Thanks for making the subject matter so simple for students new to the material...

[@robertobencivenga6467]

You are welcome. Let me know if you have any suggestions for improvements

[@bencirobg]

+Mel Bowen: Thanks for the question. You are telling me what the purpose of the study is, but not how you plan to collect the data, so I cannot figure out what sampling method you plan to use. The general recommendation is always to try for probability method, or one as close to it as possible.

[@bencirobg]

+Mel Bowen Hi Mel, sorry for the delay, but you are still not telling me HOW you plan to gather the data. That is the key factor in determining if it is probability sampling or not. Either can be done on secondary data.

[@bencirobg]

+Mel Bowen It seems to me that this kind of exchange of information is not working, as you keep telling me what you plan to do, not HOW you plan to do it or even what information you can access. I suggest that you discuss the issue with a statistics expert in your area.

[@jessicap0326]

This is very useful for people like me who go to school online. I appreciated this and the non-probability video!

[@bencirobg]

+Jessica Pena I am glad to be of help.

[@joystyles]

Great video, used it to study, your examples are much clearer than the examples in my study book!

[@ameenalgamal.9741]

I just wanted to thank you for all the video

[@supersuparan]

This was very lucid and helpful. Many thanks for the upload.

[@chezzy62]

Fantastic video, Roberto; it really helped me out! Thanks for making it.

[@miftahiabagojam5433]

hello, how to choose the appropriate sampling method for infinite population?

[@AyoKarla]

Thank you. It's very clear and it helped me a lot!

[@Ms19754]

Why is the stratified sampling a probability sampling method but the quota sampling is a non-probability method?

[@bencirobg]

+kalina penkova What do you mean by "Quota sampling"? There are several methods that may be referred in that way.

[@riyanciemathews3190]

Thanks for a great video!

[@bencirobg]

+Riyancie Mathews You are most welcome!

[@divyanshubhargava347]

thanq very much sir, this video saved me in my exam.

[@NagaXerexKnt]

Thank you

[@unagatinha]

Collect a sample with high quality data might require a hard work. Another challenge is how to compute probabilities once we have the data. A common approach is to make inferences of the population mean, which is not so complicated because it allows to benefit from Central Limit Theorem. Another approach is to make inference about the probability of having a single event. These approaches answer to different questions, but both relevant. For the seconf, one example is seen in dunamath.com/homeUPC.aspx

[@merryrose372]

please can u give me an exampl about quota sammling?