Regression #3: Standard Error in Linear Regression

[rmdaspit]

Thank you for these videos. I do have one question. If you were to find out that one person spent $31 on the lottery, how would you find out what their disposable income was with error estimates?

[bionicturtledotcom]

@rmdaspit thanks, you'd solve the equation for X: x = y/0.081 - 7.618/0.081. If y = 31, then x ~ $289

[rmdaspit]

@bionicturtledotcom Right, I was just wondering if there was a way to put bounds or estimate how good $289 is.

[bionicturtledotcom]

@rmdaspit oh right, i'm not sure from the information given. Definitely the flipped equation that solves for X as F[Y] is NOT a valid regression; it's slope will be incorrect. So, short of re-regressing, I cannot recall if the new intervals can be inferred from the current.

[sasamuraki]

Sir, so we have two ways of testing the validity of t-stat? if it is < 1, and < critical t value to disprove the null hypothesis, ir the coefficients are zero?

[trisky1234]

YES! I've finally got it thanks to this video. THANK YOU!!!

[miracle842004]

thank you! very helpful to watch right before the test!

[sureshatt]

hey thanks,, this was really useful. thanks again...

[1991farooq]

hi,

was wondering how you found the standard errors above ?

[phustgirl]

How do u interpret standard error?

[Blendz2009]

@phustgirl - the standard deviation of the sampling distribution of an estimator.

[1991farooq]

@Blendz2009 the square root of '51.89/8' square rooted is 2.54. yet in the video its 3.052

can you tell me where im going wrong ?

[kenkoujin]

perfect! thank you!

[minasianas]

By any chance we are going to the same uni, cheerfullgiver? LoL :D great vid, helped me a lot!

[cheerfullgiver]

Thank you! this vid is so clear and detailed enough to suit all levels of this topic..I learnt much more than months of going to lectures!( in the cold snowy winter) .. i should have found u sooner.. Be blessed!

[utUBEr00001]

ILL REJECT YOURE NULL HYPOTHESIS!!!

[yoyomamagawd]

theres a different standard error for every fitted value. we have less faith in the fitted values the further they are from the center of the distribution of the independent variable.

[Mishkafofer]

Please upload this file video again with higher quality, in HQ mode it still looks bad, previous videos are fine.

[geiko187]

I believe p is your first probability and q is your second probability or (1-p)... could be wrong though.

[pollibob]

I'm about 95% confident for the exam next week after watching this demonstration

Fantastic lecture!!

[Mishkafofer]

that means alpha=5% lol

[daridaist]

what does entertain the idea mean?

from the context I understand reject the idea, because null hypothesis was intercept is equal to zero.

Anyone?

[klum03]

dude, seriously....i have learnt more stats in the last hour of watching your videos than i have in the last few months of going to lectures..vids are very very good how u explain EVERYTHING

[dizzinicol]

the multiple linear regression model follows a F distribution where....

F= (RSSo-RSS/q)/(RSS/n-p-1)

any idea what the q and p stand for?? cheers

[missedagain]

quantity and price?

[binarymax]

Hi David, Great video(s)! But how would I go about calculating Standard Error by hand?

Many thanks, Max.

[bionicturtledotcom]

hi christy,

currently it's on my paid member page but i am happy to send to you a copy. i don't know how to do that via youtube, do you have an email?

[christy00008]

do have a website with that worksheet?