Statistical Tests: Choosing which statistical test to use
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- เผยแพร่เมื่อ 12 มิ.ย. 2024
- Seven different statistical tests and a process by which you can decide which to use.
See creativemaths.net/videos/ for all of Dr Nic's videos organised by topic.
The tests are:
Test for a mean,
test for a proportion,
difference of proportions,
difference of two means - independent samples,
difference of two means - paired,
chi-squared test for independence and
regression.
This video draws together videos about Helen, her brother, Luke and the choconutties.
There is a sequel to give more practice choosing and illustrations of the different types of test with hypotheses. • Choosing which statist...
See creativemaths.net/videos/ for all of Dr Nic's videos organised by topic.
Here are links to the videos mentioned.
Test for a mean: • Hypothesis test (t-tes...
Difference of two means, independent samples: • Hypothesis testing: st...
Difference of two means, paired samples: Coming soon
Chi Sq test: • Chi-squared test: (2) ...
Regression: • Scatterplots in Excel,...
#DrNicStats #Statistics
Dr nic, in 2022, your videos are still extremely helpful. So clear and concise. Thank you for this gift.
Glad you like them! Who'd have thought they would still be going strong after ten years!
Out of all the statistics channels and videos, this by far is the most helpful; very simple and concise, didnt use any convoluted words to impress audience but precisely to help understand
Thank you. I did put a lot of thought into devising that diagram.
Very interesting presentation👏👏
I am having airborne dust concentrations data for >1 micron size, >3 micron, >5 micron and >10 micron size.
(> means greater than)
These data was taken before and during dust producing work in field study.
N=5
How can i compare these before and during operations data ?
It seems that there is relative percent variation in dust concentrations in atmosphere between before and during operation data. (Taking >1micron as 100 %)
Before operation:
The relative percent variation of concentration with different particle size is as below. For example
Concentration of >1 micron size particle is 100%.
>3 micron: 80%
>5 micron : 60%
>10 micron: 40%.
During operation:
Concentration of >1 micron size particle is 100%.
>3 micron: 90%
>5 micron : 80%
>10 micron: 70%.
It seems that >10 micron particle share is increased due to that machine operation...?
Which test is suitable for analysing these type similar data for discussion ?
How to use statistics?
Any comparison among these concentrations of different particle sizes ?
thank u.
Thank dr, you help a lot
Helpful Diagram 👏
Do u have any email id where u personally assist for PhD scholar? Kindly share if so
@@anikanashatmatin6860 Sorry - I don't have time for individual tuition/consultation at present.
As you can see from other questions, it is quite usual for the question to be vague. Only with experience do you work out what details are needed. It looks as if I need to do a video on non-parametric tests, which is what most of those are.
This is not only EXTREMELY helpful but hilarious! So fun to watch!
Hehehehe the notes she was leaving to make sure you pause the video are just hilarious.
Korni nyo
Thank you so much. This is a real life saver. Believe me. Among thousands of videos yours are straight to the point.
I love love love your Venn diagram approach!!! Thank you so much. I have read quite a few econometric textbooks and they still don't make it anywhere quite as clear as this. Thank you!
This is a useful video for students that are still at a point where they are unsure which of many statistical tests they should use.
Dr Michael Moroney Thanks. I think it is also helpful in that it shows some of the relationships between the different types of tests in a way that a flow diagram doesn't.
Your videos, in my opinion, have some of the best explanations of basic statistics. Thank you.
Impressive. Your lock step approach makes it possible to analyze and conclude which test to use. I've been looking for this for a looooooong time. Thanks.
Thank you so much. This would have helped me not be so far behind in my introduction to Statistics course. I am going to pass this video to my former professor.
Wow, you channel is amazing! Thank you for making something that I thought I will never understand so easy! Three hours of lecture from my professor vs 9 minute video from you.
Hi Anna
Thanks for your endorsement. It may be that the three hour lecture gave you useful stuff, and the video helped organise it. Teaching statistics is very difficult, which makes learning it harder than it might need to be. Keep watching!
THANK YOU, MY GOD you saved me! Love Helen and her attitude haha! Thank you again :).
It is good to draw two boxplots and/or histograms as well, as that gives an indication of the spread of the two samples as well. Graphs are an essential part of any statistical analysis, and will have to be the subject of another video!
We used to learn through animations. Excellent summarized presentation.
Helen bringing statistical queries as an example.
Good, informational video and thank you for including closed captions!
A bit depends on your sample size. You could use Spearman correlation or Kendall's tau.
Various topics are now very easy to understand after listening ur lectures. Keep it up. You are spreading the wisdom
just 2 mins in the video and It has so much clarity!, it means a lot of efforts were put by you to summarize this. Thank you for making our lives easier.!
Thanks - I really have put a lot of thought in, so it is nice to be appreciated.
thank you soon much :) it was very clear and systematic, helped a lot!
I'm studying for my comprehensive exam..and found this very useful..thanks. I don't mind the accent at all...
This is hands down the most useful graphic I've seen. Thank you, Dr. Nic
Wow, thanks! It took quite a bit of thinking to come up with it.
I've not finished the video yet, but it's been really helpful so far! Breaking it down into those questions has helped me figure out what I'm looking for.
So glad to hear it! Most text books etc use a flow diagram method, but I made up this way of displaying it as it shows the relationships between the methods as well.
Most useful diagram i have found and its so simple. If i found this earlier I wouldn't have had such are hard time following along in class!!!!
That is great to hear. Usually textbooks use a flow chart approach, but I wanted to make one that held everything together so you can get an overview. It is my own invention, so I'm happy you find it helpful.
i cant believe how helpful this was
Thanks - I thought really hard about how to present this in a more holistic way than the usual flowchart approach, so I am happy it is helpful.
I love how easy to understand and logical this was.
The visual displays helped my understanding immensely.
I wish all statistics teachers were this good at conveying information
Thanks - I thought really hard about this to make it clear.
Happy to hear it.
Nice one. Technology in action. I will continue to practice. Thanks.
One of the most useful vidios.. Thanks a lot
my bio stat teacher just read thro the power point in mono tone voice and didn't give introduction on any new hypothesis test we learned. i was struggling when reading text book (i am not good at learning from reading text book). ur video is very helpful and concise. it really helped me to understand the purpose of each test a lot better and make statistic more enjoyable. Thank you very much Dr Nic.
The very precise and meaningful. This is excellent Dr.
Seeing there were two independent samples, I would recommend difference of two means, independent samples. If the same people were measured before and after, then it would be paired difference of two means.
I don't know which one is correct in analyzing the difference between the pretest and posttest if the number of participants in my control group is 15 and control group is also 15, defying the criteria of using parametric test. What should I do? Please help♥️😭
Now we are in coronavirus year
Well explained and fun. Thanks
Thanks. The thing is, if you use a computer package, it uses the applicable statistic and converts the answer to a p-value. I'll put that in my list of videos to make! Working on time series analysis and reporting at present.
Excellent summarised presentation.
Partially helpful, but a bit confused about what the names of tests translate as - I think they're the same concepts as I've learnt in my lectures, but they don't have exactly the same names
wow - i just understood my statistics module that happened in 2009 for the first time - thank you!
I found it really help full, I am attending my MPH but can really Understand my instructor in the class but after getting this video wow, I understand it thank you so much.
Amazing summary and perfect example!
From Bogotá-Colombia Thank you :-), this is a really good work, you inspire us as teachers-- :-)
the way u have editted ur videos is simply appreciable!!!!
loved dat statement, " If you have any kind of self esteem!! Pause!! " hahahaha nyc 1 truly admirable
Thank you so much for this video. It made some of my concepts clear.
Thank you for clarification on the tools
Thank you.. very helpful :)
Gem of a video!!
Thank you this has helped with my assignment
Excellent video! Very powerful explanation and unexpectedly hilarious visuals. Thank you!
all humans should watch this at some point in their lives
Wow that Eureka moment!!!! I finally get it 😂😂😂😂 thank you so much!!! I can finish my dissertation in peace now! This is so simple and straightforward 👍
That is great news.
How good is this: Doing an online degree - without this type of resource would be totally lost. Thank you :)
Thank you Michael, I just started learning statistics for fun and for better understandings and I couldnt even think of better video than this! Incredibly good starting point, and I think I will study all of your choclate adventures ^^ :)
Pause if you care your education😂😂anyway good video. Thanks sm😆
Very helpful video. Helen's got an attitude though. Hilarious.
Thanks Abigail. She makes me laugh. My son, who was the editor for many of these videos, has a quirky sense of humour.
Thank you so much for this! You didn’t just teach the content but also how to navigate and use what we learnt. Your videos have been exceptionally helpful. God bless you ❤
So happy to hear that.
Thank you, so I'm looking at an independent groups experiment. Something as simple as that seems like it doesn't require much more than calculating the average, (sample mean) from each group. And comparing the differences.
I want some choconutties!!!!
Me too.
Helen is always angry when she asks people to answer her questions. She should change her attitude otherwise she can not find the real answers from the respondents and therefore, the results are not valid.
You wouldn't think she has an attidute if she was a man. Anything to bash a woman entrepreneur even if she's a cartoon. For a man, this behaviour would go un-noticed and, mostly, un-commented..
Such a funny remark to teach about response bias.
Guys, plz take it easy and don't consider my comment as sexist. I just try to explain that we should not force someone to answer our questions as it can effect they response. I apology if I offended someone. All the best.
@@xrc7445 it's her choice
@@xrc7445 Sure, make everything about gender again. No, the situation would not be judged differently if she was a man and no one is bashing female entrepreneurs. It's a cartoon made for education. Leave your stupid world views out of here.
Best explanation yet! Thank you for posting this. Wow! I chose the correct one almost every time!
Thanks and well done. There is another practice video as well.
very helpful explanation, thx for sharing
You save my life, save my time. Loads of kisses to you :* :* :*
Diệu Trần hhhh
Lol, didnt even pause... haha.. *confused
Thank you for such a great video! Really benefited from the content but also the methodical structure and system that you taught the concept through.
Glad you enjoyed it! I put a lot of work into the structure so it is good to be appreciated
This is the 2nd time I am watching this .. this is such a useful video... testing ourselves against the examples was an eye-opener... could you please also share when do we use path analysis vs regression.. thank you so very much...
is that brienne from game of thrones?
Your accent is totally non comprehensible. pickets? choco latte? tist?
^ spoken like a true aussie
New Zealand accent.
I beg to differ. it is comprehensible, it's just probably an accent you are not used to. oh and it's choco nutties by the way. There are many different accents so it wouldn't harm to learn to get used to some new one once in a while. Wouldn't it be boring if everyone spoke in the exact same way?
yo I blew on my screen because I thought your profile pic was a piece of hair hah got me
A nice and innovative way to explain... Thank you so much.
Hi... thanks a million for making the basics so clear.. choosing a test also has got to do with which kind of data is our dependent variable. & the number of variables.. It would really very helpful if you could share info on that. for eg, I havent understood when would we use path analysis & when logistic regression.. it would be of immense help if you could suggest in similar lines
I Love the art used in these videos. Very nice work!
Thanks - the artist is an anime fan, as I'm sure you have guessed.
Very helpful video, thank you!
Thank you very much, you have done a great job with simplifying what test to choose.
Thanks. I did a lot of thinking for this.
This is an insanely helpful video. The topic has been clearly explained and the examples are on spot. Thank you so much.
You're very welcome!
Thank you. Excellent video
Thank you for explaining with clarity about the various statistical tests.
You are welcome!
Hello there!! I watched the video "Statistical Tests: Choosing which statistical test to use". It very well explained all types of statistical tests and how to use by giving examples and elimination of tests based on Data, Samples and purpose. THANK you!!
This is an excellent video to understand TYPES of test. Hats off!!
Thank you very much!
Thank you very much! I wish I had seen your video during my class and could have shared it with my classmates. Brilliant.
Thank you for explaining such complex concepts of choosing statistical test in easiest manner. Really helpful.
Glad it was useful. It took quite a lot of thinking to come up with that format
These vids would have been so great when I did stats and epi many years ago. What a great resource.
Thanks
Your video was both simple and effective. It nicely presented the data, samples, and the purpose of analysis, helping in the selection of the appropriate statistical test. Thank you!
Glad you enjoyed it!
Very useful and easy to understand! thank you for making the video
I have developed a lot of respect and love for statistics! thanks to you !!
That is lovely to hear, Radhika. Understanding statistics is such an important skill for being fully informed. Glad I could be of help.
@@DrNic thrilled to get a reply from you ma'am
Perfect Video for New Researcher
You should watch another of our videos about types of data, nominal, ordinal, interval/ratio so you can get a better idea of what kind of data this is. As the video shows, some people would say the data is ordinal, and you have to use a non-parametric measure. Others would say that it is interval, and you can use a t-test. I would do both. They will almost certainly give the same answer with regard to the original question, though the p-values may differ a little.
I guess that means i'm doing regression analysis. Tons of help, here, Dr. Nic! God bless you!
Thank you for that. Good luck! I have a series about multiple regression that is also helpful for linear regression.
some of the best explanation among others. it's very helpful. thank you.
Thank you very much for this video. I really need this for the upcoming licensure examination for Psychometricians this 29 and 30 and I could say that I’m having issues with Statistical tools :)
Thank you so much from Myanmar
You save my Midterm !!!
Thanks. I put a lot of thought into that video. We are just about ready with a web version now too, in case they don't have an iPad or iPhone.
Oh thank you so much for replying and helping! Much appreciated :)
Excellent Job.
It really helped me a lot. Thank you for the most informative video.
Thank you for the detailed explanation and making the topic clear to us!
You're very welcome!
Wonderful idea for brainstorming... that she let us think first and then give answer.
I'm glad you like it. There is a follow-on video that gives you some more examples too. th-cam.com/video/PLTZrQt01S4/w-d-xo.html
Excellent video. I learned so much. Thank you.
Hello there, thanks for your endless effort. I'm having trouble differentiating between the Sign test and Willcoxon test. When do i use each??
Brilliant video. Loved the sarcastic comments... it got me to pause. Great stuff Dr Nic
Glad you enjoyed it. The comments from my editor who is also my son. He's pretty funny
Very helpful in my grasp of the fundamental considerations.
thanks for the really well done video.
Do you happen to have a video showing how under different conditions and test scenarios as described above, we should be employing either z, t, f, chi, etc ?
Thank you sir for expanding
Thank you. Very nice explanation with example.
Thank you for enlightening us about various statistical tests.
Glad it was helpful