Sampling Methods 101: Probability & Non-Probability Sampling Explained Simply

Learn about sampling strategy and the most popular sampling methods in less than 15 minutes. In this video, we unpack what sampling is and look at the strengths and weaknesses of the most common probability and non-probability sampling methods, including simple random sampling, stratified random sampling, cluster sampling, purposive sampling, convenience sampling and snowball sampling.
OVERVIEW:
00:00 Introduction
00:55 What is sampling?
01:20 Sample vs population
01:48 Representativeness in sampling
02:55 Probability vs non-probability sampling
05:00 Probability sampling methods
05:20 Simple random sampling
06:39 Stratified random sampling
07:53 Cluster sampling
09:58 Non-probability sampling methods
10:16 Purposive sampling
11:35 Convenience sampling
12:40 Snowball sampling
13:50 How to choose the right sampling method
16:38 Recap - sampling essentials
17:40 Outro
RESOURCES:
- Sampling 101 - gradcoach.com/sampling-methods/
- Research bias explainer - gradcoach.com/research-bias/
- Research coaching - gradcoach.com/dissertation-co...
To learn more about sampling methods, be sure to visit the Grad Coach blog at gradcoach.com/blog/.
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[@chimdindungubo]

Is non-probability sampling a research strategy in the research onion??

[@arulanpillay6515]

Hi Emma, I watched the videos as I went through my dissertation chapter by chapter. These videos, along with my own reading from research textbooks, and advice from my research supervisor has helped immensely. I received a distinction for my MBA dissertation. Many thanks to you and all the other presenters from Grad Coach for uploading these videos. It’s a godsend when doing a dissertation. Thank you ever so much. You played a big part in helping me get a distinction in my MBA.

[@GradCoach]

Great job! You should be proud of yourself. Glad you found the content useful :)

[@omasank]

Thanks Emma, this is definitely one of the best materials in this subject on the internet! you simply nailed it!

[@vanessan2739]

Thank you so much for these videos, they really calm me down while I'm writing my dissertation!

[@raosam]

very clearly and nicely explained. Kudos to you all !!!

[@ruotbiel1734]

i really needed a lot about sampling methods in this video. thanks you so much

[@EshitaSonawane]

This was really helpful, thanks a ton!

[@paularovas665]

Thank you very much. This was very usefull towards fitting my disertation topic within different samplings.
Love the way you explain it and everything was very clear. 🙏

[@anupamanisho5130]

Thank you for such wonderful simple description of materials making to very easy to understand for all. I felt like I went back to my 1st year classroom in my University.

[@NdapewaNambinga03]

Thank you, I love this 🙏😍

[@DavisSondashi]

Thanks very much

[@amakaanele7819]

you are a good coach/ teacher

[@Carib7056]

This was very useful

[@sadafrabbani5161]

I just love the way you make research sound so easy and fun. 😃

[@GradCoach]

Thanks :)

[@panduleniainaeliaser9199]

Nice explanation 😊

[@richardgordon]

Kudos! One of the best videos on ANY subject I've viewed on RUclips. First of all, the Reasearch Coach was fun and interesting to listen to! She actually has a personality. Secondly, the learning objectives were delivered in English. Not some stilted "academic speak" which was difficult to interpret. Thirdly, the information was interesting and informative! Many thanks. Brilliantly done!

[@GradCoach]

Thanks for your detailed feedback. Much appreciated!

[@palashjyotiborah9888]

I am hooked to this channel.

[@MissMedicoVlogs]

Amazing ❤

[@gugulethushingaitanyanyiwa3448]

Thank you, couldn't read on sampling but this video came to my rescue, the examples make it more clearer

[@GradCoach]

Glad it helped!

[@Areeba13alivn]

3 methods uses in sample size determine in qualitative research
Thank you

[@moussamounir1909]

Hi Emma, Which data could I use for fitness periodization (strength, fitness, Agility ...) and Analysis the soccer game? Thank you very much for your videos!

[@MudiniAlbert]

Hi Grad Coach, by watching the first clip, I already feel well versed and encouraged to go the mile with my research thesis. Thanks

[@GradCoach]

Glad it was helpful!

[@Minderfulife]

So if you are working in clusters without sampling frames and have a tight time and budget limit. What technique should we choose if it is too expensive and time-consuming to enumerate and the clusters are too disorganized to do systematic sampling?

[@Hsm140]

Thank you Emma, keep more videos coming, nice time

[@GradCoach]

You're welcome :)

[@pouyamahmoudi]

Thank you.

[@GradCoach]

You're welcome :)

[@thatomofolo452]

stratified sample will do thanks

[@MsOremy]

Thank you Emma

[@GradCoach]

You’re welcome 😊

[@larrylenard3282]

Love the video. I wish that you could say button better.

[@AhmedMuzeyen]

Wow ❤

[@scholar1289]

Hey Grad Coach, I am a big fan of your videos ❤❤❤. I have a question, could you please do a video on how to categorize a reading list? I mean how to document the material I’m reading?

[@arulanpillay6515]

Check the Literature review video. They have a link to a spreadsheet to catalogue all the articles you read and to make relevant notes.

[@GradCoach]

100%

[@brighttooth3592]

Thank you

[@GradCoach]

You're welcome

[@csquare5427]

Thank you for your video. In case of convenience sampling, how can we know/explain the population?

[@GradCoach]

With convenience sampling, you can't be sure the sample represents the entire population accurately. You can describe the people you did sample, but you can't confidently say they stand for everyone in the population. It's a trade-off for the ease and speed of collecting data. If you're using convenience sampling, be clear about its limitations when you talk about your findings.

[@Steve-wo7gt]

So, I'm reading a journal article about a small college library trying to determine why the college staff doesn't take advantage of using their ILL service. They've stratified the population to students, faculty, visitors, and staff. They're only interested in a particular strata (staff) though and only interviewed them by sending the entire college staff an emailed survey. Is that still considered a stratified sampling?

[@Dr.HusseinEid]

I always watch every video you upload i am from somalia horn of africa

[@GradCoach]

Thanks!

[@_dentbae_]

What is the name of the sampling method whereby everyone in an area or class is recruited for the research study?

[@tahanianonymous6738]

HI, it is a really beneficial video but please could you provide me with primary sources that explain this because I need to cite this information in my assignment. Thank you!

[@GradCoach]

You're welcome to cite the companion post gradcoach.com/sampling-methods/

[@ChristianLight1746]

Hi Emma.
You are pretty.
Plus your videos are a great help for the exam I am preparing for.

[@jomingeorge6329]

Please make video about how to choose correct statistical tool

[@GradCoach]

Thanks for the suggestion :)

[@GBasaula-sz7lk]

Can you please help me get more info on AI in Entrepreneurs ? My research is on "Shift on business delivery by AI)... Would appreciate your help if possible.

[@jonasjia787]

Your voice is amazing

[@GradCoach]

Thanks :)

[@ratidzaichirangande3584]

Perfect teaching methods,easy to understand

[@mater5930]

I think you missed "systematic random sampling" as a probability sampling method.

[@vall653]

Yup I was looking for it

[@All_Things_HR]

When the population is Heterogeneous, Stratified Sampling or Cluster Sampling is quite appropriate ????

[@nabiyazehra1545]

Stratified

[@chimdindungubo]

where does non-probability sampling fir into the research onion

[@comedish4985]

Who else through it was about music🎶 ??

[@DavisSondashi]

Thanks very much