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Analysis of Variance (ANOVA)

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A description of the concepts behind Analysis of Variance. Also, see this site: http://www.psych.utah.edu/stat/introstats/anovaflash.html for a "hands-on" experience.
Категория: Образование
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Текстовые комментарии (198)
Tuan Long (15 дней назад)
thanks a lot =))))
Demba SONKO (17 дней назад)
THANKS a lot
Mustafa Bohra (20 дней назад)
Amazing!!
sinamen516 (1 месяц назад)
super helpful, thank you!!! 🙏 😊
Jina Matcharia (1 месяц назад)
This is how to kill people with misophonia
J David Eisenberg (1 месяц назад)
Turn off the sound and turn on the captions.
YoGabba Gee (1 месяц назад)
terrible video
J David Eisenberg (1 месяц назад)
Can you be more specific, please? Is the information incorrect? Does it need better graphics? Yes, I know it needs better sound quality :)
Siti Zulaika (1 месяц назад)
Can anyone help me chose what test should I use? :(
Ralph Andrew Tamayo (2 месяца назад)
Thank you for this simple yet CLEAR explanation of ANOVA. You're the best!
Annie Bananie (2 месяца назад)
You are an outstanding teacher. Not just mindlessly going through the steps but making connections in a logical way. Thank you so much for this video!!
Saurabh A (2 месяца назад)
You sir are a genius....Thank you!
Teo Yoon (2 месяца назад)
Well explained. appreciated it!
江宣怡 (3 месяца назад)
You really got ANONA' spirits.
RUTURAJ PATWARDHAN (3 месяца назад)
Nice Explanation, Thanks.
RUTURAJ PATWARDHAN (3 месяца назад)
Nice Explanation, Thanks.
Ives of March (3 месяца назад)
Thank you!!!
Luis Amaro (3 месяца назад)
Simple but great and effective explanation
Philip A. Secondez (3 месяца назад)
Super helpful, thank you!
PoultryFarm08 (3 месяца назад)
Excellent video! Very simple and clear explanation, thank you.
Jonathan Wright (4 месяца назад)
Thank you for making this understandable. the best explanation I have found after hours of searching.
Caleb Blodgett (4 месяца назад)
Awesome explanation, thanks!
s (4 месяца назад)
clearest explanation I've heard/seen - thanks - you're a great teacher
Younes Maknassi (4 месяца назад)
simple, clear and to the point. that's whai i needed
Samuel (5 месяцев назад)
Simplistic demonstration of the key ideas of ANOVA. Well done sir!
Milos Schaffner (5 месяцев назад)
one of the best explanation about ANOVA. please do more!
sunriseandnightfall (6 месяцев назад)
Thank you so much! This was by far one of the best statistics videos.
Jar dina (6 месяцев назад)
you need some water, i guess
joEEE TX (7 месяцев назад)
Thank you for the explanation.
anton gyurov (7 месяцев назад)
pretty sweet explanation!
victor ahiaba (7 месяцев назад)
Thank you. I have finally understood this ANOVA thing. Thank you so much.
Whittney S Kilgore (7 месяцев назад)
Hands down the easiest to understand. Thank you so much, I'm so confused with this class, but you have helped me understand a lot better :)
Tim Braumoeller (8 месяцев назад)
bello!
valor36az (8 месяцев назад)
Awesome
Renu Saini (8 месяцев назад)
Wowww it ws really helpful
Shideh Shideh (9 месяцев назад)
This is one of the best explanation of ANOVA I have seen too. Thank you so much for the great post! : )
Ganesh Selvaraj (10 месяцев назад)
Great explanation sir. Thank you.
oldmonk 99 (10 месяцев назад)
The best explaination..It took an hr in class but I wasnt clear....thanks Sir wonderfully simplistic explaination
anurag anand (10 месяцев назад)
What an amazing explanation! Thank you so much, man.
Anjali Patni (11 месяцев назад)
if more then 3?
sohel chowdhury (11 месяцев назад)
How do you include the data of day and night along with reaction time in spss?
J David Eisenberg (11 месяцев назад)
I've never used SPSS, so I can't tell you. You might want to ask the question on a forum devoted to the topic.
蘇軒漢 (1 год назад)
you totally save my final.
Gina Frangs (1 год назад)
you need to drink some water...
Everton Silva (1 год назад)
I watched it because of the cat
Everton Silva (1 год назад)
Just kidding XP, the video is very good, congratulations! But the cat in fact is very very cute!
J David Eisenberg (1 год назад)
Marco the cat thanks you for watching and hopes you enjoyed it. :)
Richard Johnson (1 год назад)
You did an excellent job on the ANOVA presentation. Would like to also see one like this for MANOVA. We are just now beginning to study these in our doctoral classes. Thank you for your excellent work.
B R (1 год назад)
Thank you .it is simple and useful ? Could you please explain the alpha and p value
chadalawada raviteja (1 год назад)
Thanks so much for such a nice and clear explanation.
dnmz525 (1 год назад)
This is awesome! Thank you for sharing
UZAY BAŞAR ODABAŞI (1 год назад)
Adam var adam gibi..
shivansh tyagi (1 год назад)
Best way of explicating f-test, Thank a lot for this video
DASHRATH MUNDKAR (1 год назад)
One of The best Explantion ......Life saver ......hahahh...Kudos
Obydullah Al rafi (1 год назад)
what reaction time? second ? i will be pleased if explain anyone
J David Eisenberg (1 год назад)
It's in hundredths of a second. (Even if it were seconds, the result would be the same, since the F statistic is a ratio.)
Lebo Layla (1 год назад)
Thank you so much 😊😊😊😊
Karly MacFarlane (1 год назад)
I have a quick question! For the example where you show F (2,12)= 4.27, p= .04, the variation within groups (12) is larger than the variation between groups (2), and i thought if most of the variation was within groups, then there probably wasn't a significant effect and you'd accept the null hypothesis but you said you rejected the null hypothesis. Can you explain to me what I'm misunderstanding?
Karly MacFarlane (1 год назад)
did you only reject the null hypothesis at that point because 0.04 is less than 0.05?
Mahlatse Mashala (1 год назад)
Still the best explanation for a one-way ANOVA on the internet! Thank you so much!
MURALI N (1 год назад)
one of the best explanation . Made is simple , yet so clear.
zidan40o0 (1 год назад)
Thanks for the video, it is very well explained. I just have one note, you never accept the Null hypothesis, you either reject it or you don't reject it.
Miss Roua (1 год назад)
thanks a lot it is easy and deep.. very useful
Maria Nordrum (1 год назад)
This was very helpful! Thank you so much1
Team Plumstead (1 год назад)
Thank you!!!
Michael Daniel (1 год назад)
I was doing an experiment on the effect of sucrose concentration on the fermentation of yeast. I was wondering if it would be possible to do an ANOVA test for this experiment? In your example you have ttwo differences shown with reaction time of the people and the drinks. In my case I only have the difference of sucorse concentration so I don't think the ANOVA test would work. Please correct me oif I'm wrong. Thanks
J David Eisenberg (1 год назад)
If I understand correctly, your independent variable is sucrose concentration, and your dependent variable is some aspect of the fermentation (how much, how fast, or some such). If there are only two levels of sucrose concentration, you can use a t-test. If you have more than two levels of sucrose concentration, a one-way ANOVA is exactly what you want.
Jo Do (1 год назад)
This video gave me lung cancer.
J David Eisenberg (1 год назад)
Turn off the sound and put the closed captions on.
matt wilson (1 год назад)
great explanation, but I must have misunderstood something. can you explain how you got 4.27? i get the whole piece around the degrees of freedom but not sure how you got to that number. thx
heena patel (8 дней назад)
I believe, (n-1) 3 groups - 1 =2 (within group) 15 observers total -3 one for each group. (15-3)=12 (between groups observers)
J David Eisenberg (1 год назад)
I used a program called SOFA statistics that does the ANOVA calculations. The formulas are on Wikipedia in the article on "one way analysis of variance" in case you want to do it all by hand.
Jevitha Lobo (1 год назад)
i dint get what do you mean by reaction time here and how you will measure it? please do the needful
J David Eisenberg (1 год назад)
You could do something like telling the person "when you see a flash of light on the screen, click the mouse button" and then you time how long it takes them to do the click, in other words, how fast they react to the stimulus.
Mariano m (1 год назад)
Very clear description, thanks David!!
Soufia AlShawagfeh (1 год назад)
Thank you this was very helpful!
Anna Dylan Brooks (1 год назад)
you my friend are a wonderful, wonderful human. This was so well explained.
J David Eisenberg (1 год назад)
Thanks for the kind words!
The Brew-Q (1 год назад)
Thanks for the video but please get a pop filter for your mic
iashrai (5 месяцев назад)
@Sabina Yeah the sounds were kinda annoying I agree but it "ruined all" of your morning. Wow you must not have any actual problems in life lol. No one forced you to watch the video in the first place.
TrouserSnake MD (6 месяцев назад)
lmao I can't tell if you're a troll or if you don't understand how constructive criticism works. either way, you seem like a cool guy
Sabina Mirzezadeh (7 месяцев назад)
and I came back from another video just to comment this because that's how much angry I am and yes I paused the video before commenting so that I don't hear that murch murch voices again
Sabina Mirzezadeh (7 месяцев назад)
I swear I could NOT finish the video because of that murch murch sounds, for fuck's sake, it ruined all my morning
Hamim Afif Nurham (1 год назад)
helpfull. nice
C Jackson (1 год назад)
Would you mind explaing degress of freedom please. Is it always the same. You have a great voice!
J David Eisenberg (1 год назад)
I have a video about it. You should be able to find it in, I think the Psych 18 play list.
Zulfiquer Ahmed Amin (1 год назад)
Outstanding. Thanks
Cyrstal Fox (1 год назад)
I wanted to say thank you for giving the most simplest explanation for this I actually understand it now my teacher or Professor rather explains things as if we already know what he's talking about LOL and that is not the case so anyways thank you for this so much
animel8ve (1 год назад)
Perfect brief tutorial thanks
Souhha Mhammed (1 год назад)
تحليل التباين لأكثر من3 متغيرات ياريت تنزلوا فيديو للتطبيق على spss
J David Eisenberg (1 год назад)
Sorry, I don't know how SPSS does things.
Rachel Li (1 год назад)
Easy to understand. Cheers!
Sebpv2006 (1 год назад)
Awesome Video !!!
shourya vr (1 год назад)
The best anova example I have see! Thanks for briefing it in simple terms with appropriate pictures
Sivasankar Mohankumar (1 год назад)
SIMPLE and EXCELLENT to STARTWITH.. thanks
Lei Doleh (1 год назад)
Thank you so much! Finally, I understood what is ANOVA all about!Manyyyyyyyyyyy thanks!
Fang Li (1 год назад)
Your videos cleared out all my questions about those statistical tests. Thanks a lot!
Enkhjin. Ganbold (1 год назад)
i am just starting stats course and in this video i didnt get well that what these numbers indicate. Can you please explain these numbers please.
J David Eisenberg (1 год назад)
The experiment is measuring people's reaction times after they have one of the drinks. The five numbers under each drink are the reaction times of five participants in the experiment. (Reaction time measured in hundredths of a second)
Enkhjin. Ganbold (1 год назад)
the numbers which are under the drinks, i think these are the number of people?
J David Eisenberg (1 год назад)
There are a *lot* of numbers in the video. Which ones specifically are you referring to?
Hamed Dadgour (1 год назад)
Very clear explanation. Thank you.
mistynebula (1 год назад)
Thank you for the useful explanation. You made this so much easier!
Haitham Al-Madhagi (2 года назад)
well-explained
Blue Power (2 года назад)
nice but please clear your throat next time you record.
J David Eisenberg (1 год назад)
I don't smoke (never saw a point in putting things on fire near my face), and I don't drink (I'm mean enough when I'm sober). The hoarseness doesn't bother me at all, but I'll definitely ask the doctor about it next time; thanks.
DerLiesl (1 год назад)
+J David Eisenberg you can check it our here. https://medlineplus.gov/ency/article/003054.htm I was thinking of cancer of the vocal cords, but I know my exposure is a bit skewed since I've worked as a ENT resident. Almost all of the patients with vocal cord cancer were smokers and heavy drinkers, so if you have that lifestyle I urge you to see an ENT specialist. Otherwise it might just be polyps or swollen vocal cords which are not harmful, but the hoarseness could get worse over time. In that case a speech therapist can help you reduce hoarsness if it bothers you.
J David Eisenberg (1 год назад)
Thanks; recently went to the doctor, and she didn't make any comment on my voice. What is the "something serious" you are referring to?
DerLiesl (1 год назад)
You really should see a doctor about this, it could be something serious.
deniz özdemir (2 года назад)
problem i guess because of your mic or audio system, you would need a "P" filter. :D
Hannibal Cannibal (2 года назад)
cheers doug stanhope
Tatiana Sarfati (2 года назад)
this is very helpful and simple thanks!
Karhou Ng (2 года назад)
another life saver
Monawwar Saleem (2 года назад)
very good
Md Khalekuzzaman (2 года назад)
Very Useful, Thanks!!!
Sansalamanca (2 года назад)
Really thanks a lot sir. The essence of teaching is the art of putting the complicated matters in simple words.
RECKANOWHERE (2 года назад)
Probably the best explanation on one way anova I've seen. Thanks for posting.
B. A. (1 год назад)
RECKANOWHERE I'm glad I'm not the only person who felt this way! As Einstein once said " If you can't explain it simply, you don't understand it well enough. I'm seen many videos about ANOVA's and they were ok at best. This video is excellent! Very impressed
CrazyM,ya'll (2 года назад)
i always thought ana nova is a porn actress. what is this mofucka?
J David Eisenberg (2 года назад)
+CrazyM,ya'll Well, wait till you find out about Multivariate Analysis of Variance: MANOVA. Mind. Blown.
muhammad aidid (2 года назад)
excellent
Omar Tarek Ahmed (2 года назад)
THANKS ALOT !!That was excellent way explaining !
Zonder Zwans (2 года назад)
Thanks for this video! I just needed a quick recap of ANOVA, and you were able to briefly summarize it in less than 5 min. (better than those 25 min videos --'). And btw, you sound just like Steve-O =D
Ide Bagus Siaputra (2 года назад)
Very helpful and useful:)
chitownfisherman (2 года назад)
After taking many stats courses this is probably the best video I have seen to understand the concepts. Its a shame that our teachers get so lost in formulas and the "old way" of doing things. Thanks for breaking it down simply so if people want to know more they have an idea of the basic concept.
shahnawaz khan (2 года назад)
i liked the easy explanation. so to be sure if there are more then two groups we can use ANOVA and if there are less than two, then we can use Z-test or t-test.
Sifundo Sibiya (2 года назад)
thank you very much
Supernova (2 года назад)
Didn't you forget to state the alpha to find out whether to reject or fail to reject the hypothesis?
Supernova (2 года назад)
+J David Eisenberg. Gotcha! I gave you thumbs up for the video.
J David Eisenberg (2 года назад)
+MrSupernova111 Not so much "forgot" as decided not to include alpha in an introductory video. The p-value also tells you whether to reject or retain the null hypothesis.

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