Calculating Expected values and Chi Squared Values

[@free2bme77]

Thank you for explaining this in a way that makes sense. I've watched so many videos and this is the first that was actually helpful.

[@epcollrich9220]

Excellent instructions. I've been studying this for a week now and did not "get it" until your video. Will definitely watch your other videos. Thank you.

[@vernishamitchell5640]

I'm taking a graduate level Stata class. Your instruction was amazing! It was easy and I feel confident taking the midterm test. Thank you so much!!

[@caroleepederson7660]

+Vernisha Mitchell Thank you. This video is created for my high school math students. They learn this in their IB Math course.

[@AreneStheme]

You explained this so much better than the book I have! I was able to pause and do the problem after the first example-thank you so much!

[@rainbowcat83]

I like this step by step explanation for Chi Square for our lay person. Thank you Carolee!

[@303Whitti]

Go straight to 6:15

[@kiraramirez2776]

Thank you

[@xuanfanshi8659]

lmao

[@ifyouknowyouknow7292]

Thankssss

[@justnotchilling5075]

legend

[@papiculo3070]

Thomas Carter you the goat

[@nicoleadams1773]

THANK YOU - this was perfect step-by-step instructions which I did not receive from my instructor or from my textbook. THANK YOU, THANK YOU!!!! :)

[@aprilalfaro4964]

you are awesome !! great explanation very detail and easy to see unlike my professor makes it seen a lot more complicated. thank you!!

[@narendrarao9162]

Thank you Carolee for making this video, it was very good & easy to understand as tomorrow is my exam & i was stuck at chi square test problems. I wish you were my lecturer.

[@raefituk918]

Smashed it- fantastic video!! I found a really good book with a simplified technique like this. *Beginning Statistics An introduction for Social Scientists- Ian Diamond and Julie Jefferies*

[@maudeparadinight8848]

Thank you, I'm tearing up with relief.

[@dheerajreddy3559]

This is the best explanation I ever heard. Thank you very much mam. You are the best

[@danielramos6859]

went through so many videos and this is by far the best one

[@Ruu555]

This was so helpful. I could never get chi squared test until now.

[@nboruett]

The best chi square video, you didnt assume anything

[@caroleepederson7660]

+norbert boruett Thank you.

[@ihsankhattak3786]

what a great explanation thank you so much mam I am ready now for my upcoming statistics paper now you are great

[@chankhamtengbriacheu453]

thank you for clear explanation, it really get me through my difficulty.

[@faaeqfaizal1608]

Just what I needed!

[@brontewilliams6925]

The best tutorial!

[@teryn4551]

Thank you this helped me so much when studying for finals

[@marysenos9349]

This helped so much, thank you!

[@Kghbyu]

You’ve just saved my life tysmmm

[@pantan9406]

What if the total of the actual sales and the expected totals are not the same?

[@dezeldahome5036]

why do we need to solve for the expected values? hope you can help me. thank you

[@ZoZolek150]

This video is so helpful! Thank you

[@katiecarr213]

Thank you, thank you, THANK YOU!!!!!!!!!!

[@firstkaransingh]

Awesome explanation 😎

[@tuktuk850]

love form India ❤

[@shemeerthaj1886]

Wonderful thank you!!!

[@obradovic3]

Thanks, it helped me with my internal assessment a lot!

[@Sam-nb1rm]

very useful. thanks!

[@neevvora7368]

Thank you so much for this!

[@snatch1466]

I don't quite understand expected value. Wouldn't it simply be an average? In a random example, if 5 men are republicans, 6 are democrats, and 4 are independents, why wouldn't the expected value be 5 for all three? In the video's example (at the 7:00 mark), what is the basis for expecting 32 out of 40 people over 21 to pass their driver's test?

[@brianxyz]

Your null hypothesis is always that there are no differences between the groups. In this example you'd expect the same percentage of those 21 and older to pass as you would those under 21. Since the sample contained twice as many people >=21 than it did

[@chisomeluwa73]

What if the table contains just one column, how do u calculate the expected values @carolee pederson

[@NkiruOkafor-m8f]

Where u able to get it done, if yes, how pls?

[@Teeshhx3]

extremely helpful, thanks so much!

[@wisamkadhim6318]

THANK U A LOVE UR PRESENTATION

[@caroleepederson7660]

+Wisam Kadhim Thank you

[@ziyad7780]

thanks!

[@akaclan2011]

it is so much easier and more than half to time to do this on a ti-84

[@TheSkonyo]

where is the continuation of the video?

[@dellajoseph7376]

Thank you.It was helpful.

[@master_noot]

saved my ass fr

[@elmelunde]

awsome video, thanks

[@malikwaqas631]

THANK;S G GOOD MATH BY TEACHING

[@yuktisharma4123]

thank you so much .

[@mawaddahalharbi2360]

Thank you ❤️

[@teddyman4971]

Complex to understand

[@thisisfamily1996]

what if the expected value is less than 0?

[@ikennaozor2313]

+Hanis Muhammad Logically, when would that ever happen? How can there be less than 0 of something in real life?

[@ahmadabboud19]

Thanks a lot

[@AjaMessay2]

Thanks..

[@GabrielaHernandez-wm5fd]

Why didn’t you square?

[@deliciousgarbage6373]

TYSM!!!

[@gyaamaabenaappiah-kubi1460]

This video was really helpful

[@iliadalu4656]

i have one culum no row

[@mohamedsudheer9163]

lol she just completely ignnore the expected counts for cells assumption ok

[@domestic_k9919]

i passed my road test at 17 and i cried after for no reason

[@donnellblakey8273]

Easy button: That was easy

[@sharmaineh6378]

Hey, what if there are zero's for the actual and expected values? An error turns up because you can't divide by zero. What do I do?

[@NkiruOkafor-m8f]

Wow, the best chi square video, very clearz easy and on point to understand But what the question only has one column, how will i go about it

[@Divya-bv3vf]

2*2 contingecy table value have less than 5 yates correction applicable. Isn't it?

[@thisisfamily1996]

can the expected value be given? or do we have to follow the formula to find it?

[@humeeayisha3199]

God bless you ❤️🙏🏻

[@lapsontembo4065]

wooo u r good,u know hw to explain these things,keep it up

[@trik3002]

physically, what does this EXPECTED VALUE mean in chi square test ??????? i m not asking about the formula.

[@sanjukri8044]

Thank u so much ma'am

[@sriram-1]

Thank you so much

[@przhaali5387]

You are a life saver I have a test tomorrow and I had no Idea how to do this thank you very very very much , you saved me 😘

[@edikuosazemen5448]

What about a situation were one frequency observed is not in d table,ho do will solve for dat

[@arthenamizei2201]

pls send the link for the next video, thank you. This video really helps a lot.

[@YashChauhan-ib2rl]

Thank ü so much this thing helped me In exam Very detailed video

[@subscribeme7216]

Very informative. Thank you madam.

[@omaryrajabu8619]

you go Carolee !! blessings just connected some serious dotss man

[@anitha9641]

Too slow in teaching plz kindly little bit faster

[@lesiapadmore6479]

Hi, good night Ms. Pederson. Your explanation was very clear. However, based on some other video that i have watched when calculating the chi-squared value, the individual explaining used the same denominator as opposed to using each of the expected values as a denominator. Now I am confused as to whether or not your method is correct and not the one from the instructor that I watched previously. Could you please clarify?

[@jacquelineoverton8223]

She is correct in this video. You must use each expected value, that's the whole point, that you're comparing the value you measured for each category to the value that would be expected for that category if they were drawn from the same distribution. (If you look at Wikipedia's page the summation notation for the Chi-square equation: note the "sub-i's" on the E in the denominator! That's the key!) It is possible that the denominator in the other video happened to be the same value for all cases and that created confusion. Hope that helps!

[@vanessachen2330]

Awesome performance, thanks

[@MRPEN6UIN]

What if the total value is odd between the 2 groups? Do you just end up with a broken up number orrrrr?

[@moothecow8679]

even if the expected value obtained through the formula is a decimal no.it's still okay

[@courtneyanderson64]

Awesome video!!!! Thank you!!!!

[@joshwright790]

Thanks a lot this helped me a ton

[@dawoodalnasser2367]

thanks,you made it easy.

[@Telanazel]

Thank you for sharing this tutorial,"a very clear and methodical explanation".

[@caroleepederson7660]

+Tome Goncalves Thank you

[@tanyap4024]

thank u thank u thank u

[@jenniferdelgado1174]

Great explanation!

[@alhajisuleadamu7895]

Simply awesome.

[@anishsoni8756]

GOAT

[@birabir8595]

thanks

[@sbusisomukhari1054]

Thank you so much I wish you were my lecture.

[@caroleepederson7660]

Thanks.

[@samhenri7350]

Thanks, this helped a lot.

[@caroleepederson7660]

+Sam Henri Thank you.

[@Shutupyougutteri9263]

Thanks teacher