Degrees of Freedom and Effect Sizes: Crash Course Statistics #28

Рет қаралды 180,416

6 жыл бұрын

Today we're going to talk about degrees of freedom - which are the number of independent pieces of information that make up our models. More degrees of freedom typically mean more concrete results. But something that is statistically significant isn't always practically significant. And to measure that, we'll introduce another new concept - effect size.
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Пікірлер: 75

@libertarianPinoy 5 жыл бұрын

I hope you discuss ANOVA in the future. First time I understood degrees of freedom. Also it would be really cool if crash course website had some work sheet excercises for these topics.

@doodelay 5 жыл бұрын

The explanation of degrees of freedom in the credit card thief example was a stroke of genius

@mcrettable 4 жыл бұрын

didn't understand it at all...

@justynaizabela2495 5 жыл бұрын

This is an awesome series! Explains so much! I am surprised it's not more popular because this knowledge is much in demand on the job market...

@emilyclarke8222 5 жыл бұрын

I have an exam on statistics (especially multiple regression) in two days and this just helped so much!

@madanverma2945 4 жыл бұрын

Best explanation of the topic. Bees example is a killer one and also the Credit Card example. I wish we had such brilliant teachers at grass root level, so that maths does not feel boring and hard. Thank you entire team of Crash course.

@revolutionarydefeatism 5 жыл бұрын

Actually, everybody's credit card number HAS an effect on other's, because it excludes that number!

@jamiekwon7225 5 жыл бұрын

Brilliant example for degrees of freedom. Thanks a lot.

@anand_changela 6 жыл бұрын

Avocado drop at 0:33

@nytmare3448 6 жыл бұрын

Very observant!

@DerAua 5 жыл бұрын

Wow, I would have never noticed. Most important comment ;-)

@cvsguimaraes 5 жыл бұрын

New meme: sumbody touched mahvocado!!!1

@johannachesshir8218 Жыл бұрын

That Mean Thief bit would make a great children's show idea

@libertarianPinoy 6 жыл бұрын

This is awesome. Hope you guys do regression and forecasting too. Brushing up on my econ subjects since I have never used them.

@dr.honeypremendra6737 6 жыл бұрын

Appreciations for a very nice initiative by introducing dialogue box which will help a lot in depicting what you all actually want to convey...many times..

@JackDraak 6 жыл бұрын

CrashCourse rocks! Thanks for the uploads!

@DPMixing 6 жыл бұрын

Jack Draak I wish this existed when I was still in school. What a great supplement to a statistics course.

@zuggrr 4 жыл бұрын

0:32 the avocado moved !!!!

@gibranhenriquedesouza2843 6 жыл бұрын

I liked the avocados in your table, they look very tasty.

@AntKPro Жыл бұрын

That bee example is hard to understand. Where 5420 comes from? Why is there 100 under the square, but they tell about 99?

@macmohan9556 4 жыл бұрын

Amazing way of presentation , Superb.

@sarthakbhardwaj659 6 жыл бұрын

The credit card e.g. was awesome

@Megastash 6 жыл бұрын

could you guys do one about mono hybrid inheritance

@donovan1290 6 жыл бұрын

Can you teach us about Artillery Only?

@professorinfinity5360 6 жыл бұрын

I love with your channel

@soulfrench 5 жыл бұрын

@10:17 Any person knows why the denominator is (s1^2+s2^2)/2, different from the pooled variance from the two-sample t-test? Why is the variation divided only by 2? Is it just the case that Effect size use the different denominator than the two-sample t-test?

@anaisgilbert6500 5 жыл бұрын

idk, I think its because you want to test the effect size from the 2 groups so n must be =2

@francoislacombe9071 6 жыл бұрын

I miss the little bamboo plant. I hope nothing bad happened to it. 😟

@JoeMaza 5 жыл бұрын

I saw your plush of BOO the dog. RIP Boo.

@salrite 5 жыл бұрын

Missing a Video on ANOVA, great series

@VashdaCrash 6 жыл бұрын

Ok, first half of the video I didn't get anything (as always), but when they started to talk about how practical significance is just as important as statistical significance and stuff, then I went: "Oh, so that's what you're talking about!" xD

@celedonchicas2656 6 жыл бұрын

AngelHQ obnnnjkmjkhkjjvk No

@BadlndsBob 5 жыл бұрын

There are SOME very intelligent videos on KZfaq (this is one of them).!

@hochinghui3353 4 жыл бұрын

LOL, I have statistics quiz in hours and here I am.

@eyebutterfly 5 жыл бұрын

Wonderful thank you

@dagameface8181 5 жыл бұрын

Aw, I thought this was going to be a crash course engineering degrees of freedom video..

@b.sharp. 6 жыл бұрын

How about crash course business law

@TheIrishBosnian 8 ай бұрын

#28, and i still dont understand! 😌

@JCResDoc94 5 жыл бұрын

3:04 you will never know where you are on any distribution until degrees of freedom are removed - which they never are (n-1)

@crehenge2386 5 жыл бұрын

If you want this free forever, you can pay for it!!

@KKComedu 6 жыл бұрын

PLAY ARTILLERY ONLY!!!!!!!!!!!!!!!

@willyouwright 5 жыл бұрын

Its sounds as though each resource has all degrees of freedom until which they are assigned.. so degrees of freedom is not intrinsic, but yeah in order to do something useful we must forego that freedom..

@KooKarWai 5 жыл бұрын

this women does stats and econs damn

@TimsDaBossMC 6 жыл бұрын

Complexly?

@eaterdrinker000 5 жыл бұрын

DFTBA Studios renamed itself as Complexly sometime in 2017, if I remember correctly as per the plans of the Green brothers. The merchandise website remains as DFTBA.

@TimsDaBossMC 5 жыл бұрын

Cuomotep the Reluctant Libertarian cheers mate

@sthngo 6 жыл бұрын

I still prefer Celsius

@aaronhpa 5 жыл бұрын

i thought was a philosofyc one, i've studied this on the college xDDD

@Axrover 5 жыл бұрын

???????

@arneshsharma5247 6 жыл бұрын

13th

@sethsims7414 6 жыл бұрын

You might not need both other pieces since it's a credit card number. Those numbers have a Luhn checksums on them so one of the digits is completely determined by the others.

@eaterdrinker000 5 жыл бұрын

Don't forget the "security code!"

@Sabrieldier 5 жыл бұрын

Stealing a credit card number is not identity theft! At most it's credit card fraud if used.

@nytmare3448 6 жыл бұрын

DFTBAQ!

@bayarsaikhanbaasanbat9009 5 жыл бұрын

The chicken dance was totally not necessary

@Dr.CandanEsin 4 жыл бұрын

Until here it was excellent! Perfectly scripted. However here using large complicated numbers made it hard for me to digest the concept. My brain tried to place those long digit numbers in a formula while trying to understand the concept. Maybe simpler examples could help those like me, people with low IQ with maths. Though using bee sample is really genius.

@sudeepjoseph69 4 жыл бұрын

Ke lo kaya kayenge hey?

@smmm5559 6 жыл бұрын

why is the channel dead

@oldcowbb 5 жыл бұрын

isn't degree of freedom usually represented by 'K'?

@soulfrench 5 жыл бұрын

No not really. It is usually represented by n, as in the video

@ktgirl-oh9px 5 жыл бұрын

Or df.

@salexmatei 6 жыл бұрын

Could you have used a more confusing example... 92342523423512

@XioriannaEBDjinn 6 жыл бұрын

SQUAAAAAAAAAAAAAAAAAAAWK

@willyouwright 5 жыл бұрын

Its seems weird silly and logical.. The way we try to solve issues is trying to measure data and go back and change things until we see some change.. This is how a dumb computer tries to do things.. however we have powers of awareness that can improve things.. i.e. we should be looking at outliers looking for reasons why something has or hasn't worked.. i.e looking for variables.. I guess variables are degrees of freedom too?? we keep changing variables until we see better p and effect sizes. that leads to some understanding . I guess this is what machine learning is doing well..

@BasemanW 6 жыл бұрын

Honeybee populations should not be worried about! Be concerned about the rapidly declining biodistribution of naturally occuring bees!

@samuelweaver2792 6 жыл бұрын

Degrees of freedom, I barely knew her

@gutstallion 6 жыл бұрын

So that's statistics of freedom. Where is dynamic constant number of freedom? I guess it's 50 stars on 'murican flag.

@pablobiedma 5 жыл бұрын

her jokes are so cringieeee

@thomson4420 4 жыл бұрын

waste of time too long

@JamBadguy 6 жыл бұрын

Did you know gaming is a better channel

@aaronbold8715 6 жыл бұрын

thought this was going to be on the freedoms allowed by differing government types. Instead it was this useless garbage. Too bad channels are afraid to post anything substantial anymore.

@libertarianPinoy 6 жыл бұрын

Are you kidding?

@eaterdrinker000 5 жыл бұрын

Well, you could watch CrashCourse World History or other playlists for such information. This is CrashCourse Sabermetrics!

@ktgirl-oh9px 5 жыл бұрын

Degrees of freedom are important part of Statistics.