I'm afraid, without a lot more information I can't help you. Two practical suggestions 1Take as many as you can afford to take or 2. find a similar research project and see what they did.
Statistics Learning Centre madam iam working on water quality test for a perticular basin and it's area is 686, sq km since dat I need to decide how many number of samples should I college with statistical approach..so plz let me know in dis regard... My email id : venkzpatil@gmail.com
I'm taking a distance course with a entry level stat paper and my ADHD brain just CANNOT concentrate on the 30 min recorded lectures. I just find my eyes drooping and my brain turning off with boredom, so THANK YOU, this pretty much covered one whole lecture and I kept up on 1.5x speed.
All the sampling methods listed, except for convenience are random. A simple random sample is one form of random sample, and is arguably the ideal, as each observation is chosen completely independently of all the others.
@@darksidegaming9682 I presume you are asking if the two methods you used are random or not? If each observation has the same probability of being chosen, then the method is classed as random.
You should take a look at another video on the playlist from the UCMSCI channel called "Variation - why statistical tests are needed". Pretty much sampling helps us to find out information about a population when it isn't possible to collect information on the whole population.
If you are asking if those sampling methods are classed as probability sampling methods, then yes, they all can be, so long as they are well administered.
thanks very much i would like to know how to solve such types of problem? The following absorbance data at wavelength 543 nm were obtained for a series of standard solutions containing nitrite (NO2 ) using a colorimetric method: A ¼0 (blank), A ¼0.220 (5 mM), A ¼0.41 (10 mM), A ¼0.59 (15 mM), A ¼0.80 (20 mM). Using Excel (a) to plot the calibration curve, and (b) to determine the calibration equation and the regression coefficient (R 2 ).
Dear Dr. Nic, I am a non-statistical person listening to the statistical online course. Since I found your channel and a website, everything seems much easier for me. Thank you.
The blonde character looks like Mello from Death Note XD he even likes chocolate. I Think teach is getting her anime on ^ ^ Thanks for the vid it helped big time almost ready for the exam.
hi, i am a researcher currently ,i want to calculate by using cluster sampling formula to determine sample size by using s.e.x.=pqd/D D=1+(b-1)rho.my cluster no.152 and total animal population 2015,so please give me responses as soon as possible.thank you
Shit thought this will help me with my music production, feel like a knucklehead now. But keep dropping knowledge Dr Nic. Your videos straight fire. You good.
These are just design ideas of data collecting procedures with the true intent of making the data as equi-likely as possible. But there is no guarantee of the reliability of such procedures.
First of all, thank you very much for this fruitful video, it is short but it is also a good guide to sampling. Secondly, god! I'm in love with your voice hhhhhhh
Once you get over an initial small population which does effect the sample size, it does not make any difference how big the population is. So long as your population is over 5000 and the sample is less than about 20% of the population, the size of the population is irrelevant in your sample size calculation.
Just want to drop a "thank you". You have no idea how much these mean to me. Simply saying "thank you" is just never enough. But..... thank you, I really appreciate it.
Hello Dr. at 3.09 it is mentioned that if there is population of thousands and you want 50... through what method would we say we want 50 out thousands.
You divide the number in the population by the number you want in the sample and that tells you the gap between objects. For example if the population is 6,000 and you want a sample of 75, then you would take every 6000/75 = 80 th object.
Thanks to your discussion, was so amazing, actually I knew it just now. Thanks, creates more happy days to understanding that even just so hard to learn but we will can.
If you have a list of the entire population, then you can perform simple random sampling. You assign each person a number, then use random numbers to select the size sample you need. This assumes that you can reach each of the people. It may be that stratified sampling may be useful if you wish to make sure that subgroups of the population are represented. You will need to use the "small population correction" on your statistics if you are going to use your sample for inference. If you give me a clearer description of what you are trying to find out, I may be able to give you more specific answers.
Quite a few people - this video continues to get about 9000 views a month. Many of my videos are linked to from statistics courses, so every year I get a new crop of viewers.
In block randomisation, the subjects are assigned to blocks randomly, whereas in stratified sampling, the strata represent different characteristics, such as apple colour, ethnicity or age bracket. You can do stratified block design too. I found a good reference about it by Douglas Altman, called "how to randomise". I can't put the link here, but you can find it using a search engine.
![[Full Episode] The Restaurant War Thailand ศึกพ่อค้าซ่าแม่ค้าแซ่บ Episode 2 | 29 ก.ย. 67](http://i.ytimg.com/vi/r3lfLNH6Ke4/mqdefault.jpg)
anyone have stats after tmrw 😜😜
😂😂
No
Hahahahah
I find these series of videos extremely easy to understand and helpful. Thank you
what an awesome explanation!
Glad you liked it
Awesome video.. Best video for sampling
I have a quiz in one hour lol.
this was helpful
Glad to hear it - I hope the quiz went well.
@@DrNic Yes it did, Thank you
thanks good vid,
please someone can help me how to decide the number of water samples for a specific sq km of area. Suggest me any statistical approach
I'm afraid, without a lot more information I can't help you. Two practical suggestions 1Take as many as you can afford to take or 2. find a similar research project and see what they did.
Statistics Learning Centre madam iam working on water quality test for a perticular basin and it's area is 686, sq km since dat I need to decide how many number of samples should I college with statistical approach..so plz let me know in dis regard...
My email id : venkzpatil@gmail.com
That's great to hear. I put a lot of thought into having good visuals.
Thank you
Thanks in my ❤
2 days of lectures combined into 5 mins. this was really helpful
They get paid for hours, not minutes. Money is the biggest obstacle to real progress.
Right???
th-cam.com/video/sEK6p1lQH7w/w-d-xo.html
I'm taking a distance course with a entry level stat paper and my ADHD brain just CANNOT concentrate on the 30 min recorded lectures. I just find my eyes drooping and my brain turning off with boredom, so THANK YOU, this pretty much covered one whole lecture and I kept up on 1.5x speed.
thanks 1 hour lecture, simplified into 5 min video and understand better
Thank you. I spent a lot of time working out pictures that would help to explain the concepts.
You could learn a thing or two form punctations
All the sampling methods listed, except for convenience are random. A simple random sample is one form of random sample, and is arguably the ideal, as each observation is chosen completely independently of all the others.
Double, multi stage?
@@darksidegaming9682 I presume you are asking if the two methods you used are random or not? If each observation has the same probability of being chosen, then the method is classed as random.
@@DrNic ty and waiting for ur new videos
This is amazing! Thank you so much for the effort you put into this video, rly appreciate it:))
Glad you liked it!
explanations are amazing to the point and the videos are v good. One of the best stats training videos in TH-cam
This was really helpful thank you.
THANK YOU. I misssed a day in my lecture, and I was able to recap it in less than 5 minutes.
Thank you for posting such a valuable resource.
You should take a look at another video on the playlist from the UCMSCI channel called "Variation - why statistical tests are needed". Pretty much sampling helps us to find out information about a population when it isn't possible to collect information on the whole population.
Thanks you so much. I found this easier to understand than the one I read from my lecture. :)
Pictures and examples help a lot in understanding. Going through your videos its simply beautiful... U are very brilliant in your teaching..
Thanks a lot, very simple and clear :)
Awesome explanation... much easier to understand compared to the written paragraphs we were given. Thank you!
th-cam.com/video/sEK6p1lQH7w/w-d-xo.html
Convenience sampling...for a quick and cheap poll:)
Great video. Your learning center is also brilliant.
You are a real good teacher. Thank you very much
You are welcome!
This accent is so cool. Where is this person from?
+Janie Corbett New Zealand
Nick Sinclair that’s English
WhizTV What do you mean? J Corbett just asked where the person was from.
Argent Bookworm English accent
WhizTV I know what you meant by English I mean why did you say that when the original commenter asked where the person of the voice over was from?
cluster @ 3:24, stratified @ 4:00, and great explanation btw!
I finally got it, thanks for the video.
Hahaaaa have a quiz on this in three hours and honestly this has helped me more than reading that damn text book... thank you 👍🏾
Came here for sampling techniques to practice my chops, came out learning about statistics. Brilliant.
You make it clear to me in less than 8 seconds.
Nice video. Very useful
Probability Sampling
-Simple Random Sampling
-Systematic Sampling
-Cluster Sampling
-Stratified Sampling
-Multi-stage Sampling
Is this correct or not?
If you are asking if those sampling methods are classed as probability sampling methods, then yes, they all can be, so long as they are well administered.
thanks very much
i would like to know how to solve such types of problem?
The following absorbance data at wavelength 543 nm were obtained for a series of
standard solutions containing nitrite (NO2
) using a colorimetric method: A ¼0 (blank),
A ¼0.220 (5 mM), A ¼0.41 (10 mM), A ¼0.59 (15 mM), A ¼0.80 (20 mM). Using
Excel (a) to plot the calibration curve, and (b) to determine the calibration equation
and the regression coefficient (R
2
).
Dear Dr. Nic, I am a non-statistical person listening to the statistical online course. Since I found your channel and a website, everything seems much easier for me. Thank you.
Thanks for sharing! It is so good to know that I am helping.
YOOOO this vid was GREAT keep em coming!:)
Drink me
Clorox Bleach LOL
Perfect, Quick, and comprehensive. Thank you Dr.Nik
You're very welcome! I put a lot of thought into this so it's great to be appreciated.
th-cam.com/video/sEK6p1lQH7w/w-d-xo.html
Lol. Random sampling of music would be pretty interesting.
Thanks so much Dr Nic !
Could you please post a video on sample size calculation .
MISS IVERS IS THE BEST TEAHER
Good for her
I think you should do your own homework. Tell you what - you tell me what you think and I'll provide feedback.
thanks mam for such a convieniant lecture..its really healpfull...
The blonde character looks like Mello from Death Note XD he even likes chocolate. I Think teach is getting her anime on ^ ^
Thanks for the vid it helped big time almost ready for the exam.
Have a nice examples Mam thank you
It's my pleasure
Does anyone know where is this accent from? I'm curious.
Eccent? Wot eccent? I'm from New Zealand.
Dr Nic's Maths and Stats Haha thank you!!
never had such an easy homework( QA team=best team)
You are very welcome!
I am studying for my Business Statistics module. Hope I can pass.
Good luck! May the odds be ever in your favour.
Thank you for this video. Very helpful
Wowww!! Finally a great instructional video!!! and comes with the coolest accent!!
Thank you. I do my best. ;)
hi, i am a researcher currently ,i want to calculate by using cluster sampling formula to determine sample size by using s.e.x.=pqd/D D=1+(b-1)rho.my cluster no.152 and total animal population 2015,so please give me responses as soon as possible.thank you
lol
Shit thought this will help me with my music production, feel like a knucklehead now. But keep dropping knowledge Dr Nic. Your videos straight fire. You good.
THanks - you are not the first to think that.
This is really good, thanks for sharing!
does your channel cover all the content for gcse edexcel statistics
Just what I need for my paper. Thanks!
Thank you so much. I have final tomorrow but never open my book lol.
lol
Very helpful. Needed to understand for community medicine.👍
Thank you!! This was really helpful you saved me before the exams!❤
I'm so glad! I hope the exams go well.
th-cam.com/video/sEK6p1lQH7w/w-d-xo.html
its very helpful, but i wonder whats this accent? i never heard of it before :)
Hi. If you watch the introduction to the channel, you will find out that I come from New Zealand.
Thank you. This helped better understand different sampling types.
Glad it was helpful!
thanks a lot.
Convenience sample = non probability
And All other probability sampling
Indeed
Thanks it was very helpful.
Thank you so much, this helped me a lot because i'll report this on my classmates later.
Excellent
These are just design ideas of data collecting procedures with the true intent of making the data as equi-likely as possible. But there is no guarantee of the reliability of such procedures.
Thank you , that was very well explained and put together.
Glad it was helpful!
Simply Amazinggg..............
Now I know Smapling on tips....
Thanks a lot, for such a Quality Video..........
Thanks you very much.
thank you for this idea, i appreciated
First of all, thank you very much for this fruitful video, it is short but it is also a good guide to sampling. Secondly, god! I'm in love with your voice hhhhhhh
The dude in the beginning looks just like edgeworth lmao, great video btw
Thanks 😅
Thank you so much Dr. Nic. Makes so much sense
Thankyou
This helped, you deserve a sub
how to define number of sampling in huge population e.g. a nation?
Once you get over an initial small population which does effect the sample size, it does not make any difference how big the population is. So long as your population is over 5000 and the sample is less than about 20% of the population, the size of the population is irrelevant in your sample size calculation.
Can i use cluster sampling and then use convenience sampling?
Yes, but once you use convenience sampling, the sample is no longer counted as random and some assumptions of inference will not hold.
General request who want to share this knowledge with common communities of world.
This is great. Thanks so much!
Watched the useful ad for this guy😊😊 kudos to you for my report coming soon!
Thank u I think i'm now clear with the stratified sampling
sup c block stats martino
thank you so much
Just want to drop a "thank you". You have no idea how much these mean to me. Simply saying "thank you" is just never enough. But..... thank you, I really appreciate it.
You are so welcome
Hello Dr. at 3.09 it is mentioned that if there is population of thousands and you want 50... through what method would we say we want 50 out thousands.
You divide the number in the population by the number you want in the sample and that tells you the gap between objects. For example if the population is 6,000 and you want a sample of 75, then you would take every 6000/75 = 80 th object.
I came here for hip hop sampling, wrong video I guess, am I the only one?
No - there have been some other people who wanted to know about that sort of sampling.
Dr Nic's Maths and Stats haha that’s nice
watching this a day before exam :)
You are not alone! Hope it went well.
Anyone notice Mitt Romney in the simple random data
Good spotting. It is an unusual list of names, including friends and family members, Mormon church leaders and ex boyfriends!
Nice compilation...
aap bhi boys town se hain ? whch batch
Thanks to your discussion, was so amazing, actually I knew it just now.
Thanks, creates more happy days to understanding that even just so hard to learn but we will can.
Happy to hear that! I think you will find many of my videos will help you.
I never knew representativeness was a word! haha it sounds so funny. Great video, thanks.
I mean upload statistics videos lecturers courses from graduate and postgraduate level including research methodology course.
Are you asking me to do this? Or is this a general request?
"Learning and teaching statistics is surprisingly interesting with Dr Nic." true. Thanks for this!
Thank you so much for this video because it helps me to know better about types of sampling techniques
Glad it was helpful!
Need help!!!
So what is the best sampling method for a population of 265 people? Please please please
If you have a list of the entire population, then you can perform simple random sampling. You assign each person a number, then use random numbers to select the size sample you need. This assumes that you can reach each of the people. It may be that stratified sampling may be useful if you wish to make sure that subgroups of the population are represented. You will need to use the "small population correction" on your statistics if you are going to use your sample for inference. If you give me a clearer description of what you are trying to find out, I may be able to give you more specific answers.
Thank you so much for vidoes. Can I receive more information about convenience sampling?
There is not really much to add. It is a phrase used to describe any easy sampling that is not random.
Who is still watching this on 2021 with me? 😊
Quite a few people - this video continues to get about 9000 views a month. Many of my videos are linked to from statistics courses, so every year I get a new crop of viewers.
Best video I've seen explaining this subject. Currently working on a big statistics project!
Glad it was helpful!
after watching this i like that dr behind your name tnx
How does block randomization differ from stratified?
In block randomisation, the subjects are assigned to blocks randomly, whereas in stratified sampling, the strata represent different characteristics, such as apple colour, ethnicity or age bracket. You can do stratified block design too. I found a good reference about it by Douglas Altman, called "how to randomise". I can't put the link here, but you can find it using a search engine.
Thanks muchly! Shall look it up! And so nice of you to reply so promptly!
MS6260 EM2A peeps from SP anyone?
It’s our quiz tomorrow
We get that a lot. Hope our videos help.