12 - Analysis of Variance (ANOVA) Overview in Statistics

12 - Analysis of Variance (ANOVA) Overview in Statistics - Learn ANOVA and How it Works.

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Күн бұрын

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This lesson covers the technique known as analysis of variance (anova) in statistics. We will first begin by discussing what anova is and why it is a useful tool to use to solve problems. Specifically, we will discuss the one way anova technique. We will discuss example problems, the concept of the anova table, and how it relates to the definition of anova.
Next, we will provide concrete examples to illustrate the technique behind analysis of variance. In future lessons, we will solve a great many problems that require anova and show and explain every step. In future lessons we will also use microsoft excel to solve anova problems in statistics..

Пікірлер: 111

@brynrobertson6760 Жыл бұрын

I'm in a graduate level stats class and my final is Monday. I was pretty sure I was going to flunk the ANOVA section even though I tried tutoring and office hours to get help with it. Sometimes you just need a friendly, patient KZfaq guy to carefully and slowly explain with a practical, real-world example. I can't express how relieved I feel now that I understand this concept. Thank you so much, Math and Science guy, you're an Earth angel!

@JocelynCarlin-qh9ye 3 ай бұрын

without question, THE BEST EXPLANATION OF ANOVA ANYWHERE!!!! totally understand now! thank you!!

@mangocaff5143 6 жыл бұрын

You really saved me from f distribution and F grade point. Thank you so much

@charliedays Жыл бұрын

Ha, I see what you did there.😄

@babygloriagetsomesleep3826 3 жыл бұрын

And suddenly 3 years of stat tears dissolved in a 22 min video. Thanking you sir.

@ruokuolhouliesemou6522 3 жыл бұрын

Best statistics lectures I've come across. Wonderful job

@Lawsuan 5 жыл бұрын

Excellent break down of ANOVA man. Currently in a Stats class and this breakdown really helped me understand the basics. Thanks!

@raz5294 5 жыл бұрын

You're just awesome ! I thought this as the hardest subject I have ever had in our bio-statistics course but you made it like piece of a cake. Thank you so very much .

@jamesvivor1751 2 жыл бұрын

You're such an amazing teacher. Am so impressed with your site and appreciated your efforts so much. Keep it up.

@lanekuska8671 6 жыл бұрын

you are a great teacher, thank you for your work with helping all the stats students understand the concept behind anova

@paulinelocke8696 Жыл бұрын

How can this heal us and get rid of illness

@rupagopigita 2 жыл бұрын

This was so helpful....!! You have made statistics interesting! I'm impressed and finally understand the point of an ANOVA test.

@imperiusss 7 жыл бұрын

really brilliant videos. But to be honest I liked the whiteboard better, somehow it sticks better on a whiteboard. Thanks

@gambu4810 5 жыл бұрын

Hahaha, I like the example of a meteorite coming in through the roof and disrupting the class

@jersondhmsn3986 4 жыл бұрын

Great professor; he speaks so well.

@sabrinabahir1050 3 жыл бұрын

These videos are so helpful, thank you!!

@missdamascusasmr 3 жыл бұрын

you are blessed with the gift of teaching. THANK YOU

@novieannbangca136 9 ай бұрын

That you so much sir!! This helps me a lot. I'm studying masters now and we have statistics subject and this is my report all about finally I can deliver it well. Thank you God bless!!!

@damianrico2433 2 жыл бұрын

I have to agree with the comments before me, just watching this first video I want to watch and learn more from you. Great job on the explanation and on keep me engaged!!

@lucycai3356 3 жыл бұрын

Your video helped me to understand anova much better than the uni. Thank you!

@gwamnirunnamdyechezona5555 Жыл бұрын

…and I thought Anova was difficult to understand! Thanks for demystifying this. Enjoyed it!!!

@MathAndScience Жыл бұрын

Welcome!

@greyeyedone_2119 Жыл бұрын

Thank you for taking the time to explain this. You have taught me more than my graduate professor did. 🤦🏽‍♀️🤦🏽‍♀️🤦🏽‍♀️

@katbaker9852 6 жыл бұрын

How come I understand this when YOU teach it, but not my PROFESSOR?! Send me a clone please~

@calliteasy5542 Жыл бұрын

Cuz profs Work in stoneage terms of medial usage

@janithforex4075 Жыл бұрын

I’m think you get the basic understanding of concepts or get to see the terminology during your professor’s lecture and when you watch this video it completes the picture. This happens to most of the students and it is not your professor is bad at teaching or this video is the best of the world. It is how our brains work!

@mervin5291 Жыл бұрын

Hahaha

@mervin5291 Жыл бұрын

Hahaha

@Matcosci254 Жыл бұрын

I was tempted to think that I shouldn't have enrolled for a classroom learning but rather come online to substitute that

@israelphilip4812 2 жыл бұрын

THANKS FOR THIS....You are indeed a good teacher. I couldn't understand this from my lecturer. Thanks

@dorcasmrabu8823 7 ай бұрын

This is great. Thanks for simplifying this for us who it was a hell

@enyinnayawankey9394 Жыл бұрын

I have seen that the best way to learn these quantitative research techniques are here. I have been confused on a very simple thing to understand. Thank you

@ericl.gurley6830 Жыл бұрын

Great presentation. The visuals helped me a lot.

@user-nq5kr8mg5s 5 ай бұрын

Best video ever!!! on Anova thank you

@beingnothing34 2 жыл бұрын

Wonderful! Best explanation out there...

@jaysontaguba 2 жыл бұрын

This helped me for my thesis. Thank you.

@samruddhideshmukh5928 3 жыл бұрын

You are a brilliant brilliant teacher!

@TH3Willster 6 жыл бұрын

Thanks for explaining that, my stats lecturer can be confusing

@josefinasanchez6528 Жыл бұрын

Beautiful explanation… thank you.

@ionthegravity2 6 жыл бұрын

If only you were my math teacher...

@vivkan74 4 жыл бұрын

Nice clear explanation. Thanks

@Amh662 2 жыл бұрын

You made this easy to understand thank you so much

@amnaahsan1534 4 жыл бұрын

You really explain it well.

@youcefk7843 7 жыл бұрын

Thanks so much

@jerrylee3887 6 жыл бұрын

great introoduction

@MrNabiwishes 5 жыл бұрын

First of all this is really good explanation. Query : Mean would only be effective only if distribution score for all school score follow normal distribution. What if any one of the group dose't follow normal distribution in that case should we consider median . pls clarify what should be the approach. Thank you

@cococnk388 Жыл бұрын

Haaahhaaa great question.... Waiting for an answer tooo... Distribution always comes and limit our statistical test ...

@sherihanamin4829 4 жыл бұрын

valuable explanation

@AaBb-oi3kf 4 жыл бұрын

Thank you!

@earthlove628 5 жыл бұрын

Nice Explaining

@acceleratedcareerdevelopment 11 ай бұрын

Very intuitive explanation - fantastic, all made sense, from A to Z. (or should I say A to O??!)

@ThaiNguyen-zo1eo 4 жыл бұрын

Very simple explanation

@drfairoozashareff6737 3 жыл бұрын

Well explained

@shewanesgetiye5592 2 жыл бұрын

you are a smart lecture please add more

@ShortGirl618 3 жыл бұрын

You are amazing

@divinitytarot6 4 жыл бұрын

Thanks

@wasanthipathiranage9506 4 жыл бұрын

Thank you so much

@MathAndScience 4 жыл бұрын

Welcome!

@kijandahays3770 4 жыл бұрын

Nice ..can i have the proof of one way anova?

@shanayasingh6864 2 жыл бұрын

Great video, checked a bunch of videos but still not able to understand it. Great work, explained simply.

@hafizhawandi3809 2 жыл бұрын

Hafizh Awandi_Kehutanan B_Angkatan 2020. The explanation really good and can be accepted by audience.

@alanzhu7538 4 жыл бұрын

starts at 1:09 if u want to jump right into it

@cococnk388 Жыл бұрын

Hello Sir, thanks for the well defined concept. How do we know which mean is better than the other? Which statistical test can be used?

@foxreznikov5383 2 жыл бұрын

The video sound is pretty good, beyond my imagination

@tunzsyt7774 Жыл бұрын

can i use anova for 2 groups?

@abdullahahmadi5021 Жыл бұрын

I did not get how the means of 80.5, 81, and 79 are considered similar, and we fail to reject the null hypo??

@abonady6747 3 жыл бұрын

can any one help me to reach the other videos of ANOVA testing?

@datanerd112 5 жыл бұрын

I came to know what's ANOVA and why it is used but I want to know what are one way and two-way ANOVA. can someone tell me the difference between one-way-ANOVA and two-way-ANOVA?

@woodchuk1 4 жыл бұрын

Data Nerd One way ANOVA means that there is only one independent variable used in constructing the groups under comparison. Two way ANOVA introduces a second independent variable into the analysis. For example, one way ANOVA could be used to determine if the means of three or more age groups differ in a set of test scores. If we want to break down the results further into age group and gender, we can use a two way ANOVA to determine if the means of the groups differ by either age group or gender, or both.

@aza6513 3 жыл бұрын

@@woodchuk1 is this same with one tail and two tail ?

@woodchuk1 3 жыл бұрын

Azazel fall The F ratios used in both one and two-way ANOVA are always right tailed. This is because the between group variance is always in the numerator and the within group variance in the denominator. If the F ratio is less than 1, the denominator is bigger than the numerator, so there’s more variation within each group than between the individual groups...that is, there’s no point in conducting a hypothesis test since there’s too much overlap between the samples for them to be distinguishable. Since we only care if the F ratio is larger than 1 regardless of whether the ANOVA is 1 way or 2 way, the test is always right tailed.

@noreaction1 7 жыл бұрын

I thought this video was gonna give me more explanation and calculations to determine power and how and by how much outliers can change the end probability (area under the probability curve)

@ummhaneef9732 7 жыл бұрын

meanwhile... How do I add and subtract fractions?

@aanchalgosain7226 6 жыл бұрын

Only interested to explain and write the null and alternative hypothesis again and again

@samtsai8477 5 жыл бұрын

@nz1229 Жыл бұрын

Shouldn't it be called ANOM - "Analysis of Means"?

@venusstarrr2795 7 жыл бұрын

I don't understand, so since we are using sample means, what it is to do with analysis of variance?? There is no variance

@woodchuk1 6 жыл бұрын

Celia Lin I agree that the name "analysis of variance" seems like a misnomer since we're comparing means...but think of it this way. Every sample we are comparing not only has its own mean, but it's own distribution, and this distribution has a variance associated with it. If the samples have variances that are small, then the values in the samples are not widely spread out. Therefore, if you made each sample into its own bell curve to represent its distribution about the sample mean, it is likely that these distributions would have little overlap. As such, it is likely that if the means are far enough apart, we will say that the F ratio is significant. If, however, the samples have large variances, there is a good chance that there may be a fair amount of overlap between the bell curves representing their distributions. Given enough overlap, these samples become indistinguishable and basically form one large distribution "in the background." As such, we can't really say that the means are really different in this case. So, we are basically using the spread of the data - the variance - to quantify how much variation is coming from the "signal" (whatever effect we are measuring) as opposed to the "noise" in the background from the random variation. If this ratio is small, we have too much "noise" to conclude that our "signal" makes any true difference in our samples - that is, the means of the samples are not statistically different. Make sense?

@Anteater23 6 жыл бұрын

woodchuk1 I kind of get it. Thanks.

@woodchuk1 6 жыл бұрын

Anteater23 You're welcome, let me know if I can be of further assistance!

@milimomashini9432 6 жыл бұрын

Anteater23 he just explain from the begining of the video why they call analysis of variance just lister..in short we just call it because we want to see how sample mean one vary from other means

@Anteater23 6 жыл бұрын

milimo mashini I understand it. If the variation is mostly due to variation between the sample means and the grand mean instead of the variation within the samples then the sample means must be quite different to the grand mean - implying that they're not all the same. So when you take the F statistic which is sum of squares between / sum of squares within you'd expect to get a significantly large value if the variation was mostly due to the variation between the samples. If the F statistic is large enough then you're confident the means are not all equal.

@Raja-tt4ll 5 жыл бұрын

Nice

@sunmijung4 2 жыл бұрын

I wonder how population can be more than one. I thought population is only one, which is all numbers.

@harrisgausi6254 Жыл бұрын

"see how clever i am"😂

@lmartucci95 7 жыл бұрын

No help. I was hoping you would describe how to get x bar 1, x bar 2 and so on, but you did not

@praveenkumarsk5957 6 жыл бұрын

Lauren Martucci That's a sample mean . Take the sample from a population and calculate the mean

@jab376 4 жыл бұрын

Just your regular sample average or mean.

@linnmacdonald2246 6 жыл бұрын

If a tree falls in the forrest...never mind.

@johnnyq4260 5 жыл бұрын

What? What will happen? Tell me! I want to know!

@a.gabbey5569 5 жыл бұрын

Go on...

@amaebarnes Жыл бұрын

Maybe it's because I am so impatient but I had to put this video at 1.25x speed but I still couldn't deal with the repetition

@dcshortshorty475 4 жыл бұрын

deepesh chadha

@jirehag5140 2 жыл бұрын

Your videos are good but you spent so much time repeating the same over and over again, prolonging the vital lesson to learn in the video. Take note of this.