Degrees of Freedom and Effect Sizes: Crash Course Statistics #28
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- Опубліковано 21 сер 2018
- 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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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.
The explanation of degrees of freedom in the credit card thief example was a stroke of genius
didn't understand it at all...
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...
I have an exam on statistics (especially multiple regression) in two days and this just helped so much!
That Mean Thief bit would make a great children's show idea
Actually, everybody's credit card number HAS an effect on other's, because it excludes that number!
Brilliant example for degrees of freedom. Thanks a lot.
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.
Avocado drop at 0:33
Very observant!
Wow, I would have never noticed. Most important comment ;-)
New meme: sumbody touched mahvocado!!!1
CrashCourse rocks! Thanks for the uploads!
Jack Draak I wish this existed when I was still in school. What a great supplement to a statistics course.
This is awesome. Hope you guys do regression and forecasting too.
Brushing up on my econ subjects since I have never used them.
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..
0:32 the avocado moved !!!!
I love with your channel
I liked the avocados in your table, they look very tasty.
Amazing way of presentation , Superb.
The credit card e.g. was awesome
could you guys do one about mono hybrid inheritance
I miss the little bamboo plant. I hope nothing bad happened to it. 😟
That bee example is hard to understand. Where 5420 comes from? Why is there 100 under the square, but they tell about 99?
Can you teach us about Artillery Only?
@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?
idk, I think its because you want to test the effect size from the 2 groups so n must be =2
I saw your plush of BOO the dog. RIP Boo.
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
AngelHQ obnnnjkmjkhkjjvk
No
Missing a Video on ANOVA, great series
There are SOME very intelligent videos on UA-cam (this is one of them).!
Wonderful thank you
LOL, I have statistics quiz in hours and here I am.
#28, and i still dont understand! 😌
3:04 you will never know where you are on any distribution until degrees of freedom are removed - which they never are (n-1)
Aw, I thought this was going to be a crash course engineering degrees of freedom video..
If you want this free forever, you can pay for it!!
How about crash course business law
PLAY ARTILLERY ONLY!!!!!!!!!!!!!!!
I still prefer Celsius
this women does stats and econs damn
DFTBAQ!
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.
Don't forget the "security code!"
Complexly?
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.
Cuomotep the Reluctant Libertarian cheers mate
13th
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..
Stealing a credit card number is not identity theft! At most it's credit card fraud if used.
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.
Ke lo kaya kayenge hey?
???????
i thought was a philosofyc one, i've studied this on the college xDDD
The chicken dance was totally not necessary
why is the channel dead
isn't degree of freedom usually represented by 'K'?
No not really. It is usually represented by n, as in the video
Or df.
SQUAAAAAAAAAAAAAAAAAAAWK
Could you have used a more confusing example... 92342523423512
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..
Degrees of freedom, I barely knew her
Honeybee populations should not be worried about! Be concerned about the rapidly declining biodistribution of naturally occuring bees!
So that's statistics of freedom. Where is dynamic constant number of freedom? I guess it's 50 stars on 'murican flag.
Did you know gaming is a better channel
waste of time too long
her jokes are so cringieeee
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.
Are you kidding?
Well, you could watch CrashCourse World History or other playlists for such information. This is CrashCourse Sabermetrics!
Degrees of freedom are important part of Statistics.