F distribution
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Uploader Comments (bionicturtledotcom)
Top Comments
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It seems that your H1is : varience1>varience2
but not varience 1 not equal varience 2.
if you are testing varience 1 not equal varience 2, then you should find the F value whose first parameter equals alpha/2, but not alpha.
All Comments (24)
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You are a brilliant teacher!
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Thanks for the vid. A bit confused about the difference between what the f-test shows and what we conclude from the t-test.
After watching your video it seems:
The f-test is to s as the t-test is to xbar!?!
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Sorry for my lack of understanding but, why do we want the larger variance in the numerator? How is an F distribution plotted as values from less than 1 to infin. if an F-stat given by our test is always greater or equal to 1?
How would the distribution be plotted given two underlying populations with the same variances? I assume the smaller the sample sizes n the greater the skewness of the distribution (degrees of freedom).
I struggle to understand how the distr. tends to normality. Ty.
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how did u draw the curves and what are the parameters u used for both the curves...???
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great video, thanks
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What synthetic voice is BionicTurtle's?
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@HRSDKK Check out burkeyacademy com and look for videos Inference I and Inference J under Econometrics 6. This might be what you're looking for.
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It would be really awesome if you could make a video which easily explains how the normal, chi, t and f distribution relates to each other!
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thankyou for the upload :) very clear and it helps :) xx
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Excellent - very clear and avoids the usual poor/simplistic explanations
theoldorganplayer 1 year ago 4
@theoldorganplayer thank you, really appreciate that....
bionicturtledotcom 1 year ago
Hi EzE3000,
Excel has a function for F distribution: = FDIST(). Hope that helps!
bionicturtledotcom 3 years ago