Stratified v Cluster Sampling

For Woz.

[kevinpatterson]

Be careful. For a cluster sample example using skittles, all bowls should start with mixed colors. Each bowl should represent the population. THen you would choose, say, 2 of the bowls and use ALL of the skittles from those two bowls for your sample.

[kapilkadapa]

This was extremely helpful! Every website I went to over complicated it and was difficult to understand but now I finally understand the difference. Thanks!

[yaxyemaxamed]

The first time I understand stratified sampling method really

[jeewarangagunasekera]

In cluster sampling you don't consider from which cluster they are coming from. But in your video the pebbles were already stratified giving a wrong impression..

[shrutishakthivel]

I am studying for finals and this helped a lot, thank you!

[foodvideo]

beautifully demonstrated the difference between both sampling techniques

[learnfixprotocol]

in a cluster sampling all of the clusters should look similar to avoid the bias you show at the end.

[diaaalhamdan]

OMG it sure took you a lot of time to "stratify" those skittles! Really lovely and simple explanation. Thank you ^.^

[SpidermanX]

Wonderfully explained! There is beauty in simplicity.

[alanwilly-ko]

Holy moly! Skillets had me understand its difference which I couldn't get it from any other videos lmao. You're great. 😂

[svenoorsinghjosan]

Beautiful example Thanku so much for making this boring topic interesting....

[alexeimatcov]

Really great and simple explanation! Thanks a lot!

[fatmaeltarabishi]

It helped a lot! Thank you very much!!

[trpvlogs]

Thank You for this video it's really helpful for me and now I am hungry after watching this video 😁

[jacksharman]

Be aware that stratifiying the population and then applying simple randomisation is statistically no different from just simple randomising from the original population. Stratification needs to be used with block randomisation to ensure equal numbers of each strata end up in each arm of the trial.

[hotina]

All I could think of.... watching your video was - your skittles look yummy!

[SESHUNITR]

Stratified Sampling sounds okay, however cluster sampling is not correct because you need to start the clustering and more over each cluster is selected randomly once its formed. Hope it clarifies

[raymondaugestin]

it would be helpful if you give a reference of a journal or article that matches what you explained..

[firdausansarifard]

If lets say after the strata of color, and to the next phase of doing simple random sample. However, now is tht you have to pick out 50 from each strata. Would this be considered quota sampling or still stratified sampling?

[MsAkulerr]

Cluster sample as a means of stratified population？