Chi-squared independence test [IB Maths AI SL/HL]

Are you preparing for your IB maths exams? We've got you covered! OSC Study features exams created by IB experts in mathematics, showing you every step of every solution. Try it out for free here: app.oscstudy.com/
We're so excited to be able to share our exams with you!
Cheers, Mitch

[@kaleemadamjee2764]

Sitting finals tomorrow, your videos have been so helpful. Thank you!!

[@OSC1990]

You're very welcome. Good luck on the exams - you've got this! -Mitch

[@boredo5]

5:51 the joke was so funny and so cute such a nice touch to a very helpful video

[@OSC1990]

I love that joke, too! :)

[@canturkcan6801]

it tells me that the argument must be in a specific domain
what does that mean?

[@OSC1990]

Which calculator were you using? Because they all have slightly different ways of operating. One thing that's common though is that you need to put in the observed frequencies into your calculator as a matrix (be sure all rows and columns have entries and that none are blank - that's where the problem might have been for you, given the domain issue). Then ask your calculator for the Chi-squared analysis - depends if you want the independence test or goodness of fit (GOF)

[@ba-ze3fl]

thank you, this was very very very very very helpful sir

[@OSC1990]

I'm so glad! I know that independence testing (well, all of the hypothesis testing) can be quite difficult when you first learn them. Good luck with the studies! :)

[@Maluxgz]

Thank you! But I didn't understand quite well what is the critical value.

[@kaspermarshall7140]

its the value that the chi-squared is compared to to see if you have to not reject Ho or reject Ho.

[@emilymariscalw]

Thank you! I have a question, what if the table is only 1 way? The calculator says that there are not enough values but ive come across quite a few 1 way table questions

[@OSC1990]

On exams, if you need to do a chi-squared independence test, you'll be given a table, yes. So that's not something you need to worry about :) Cheers, Mitch

[@emilymariscalw]

@@OSC1990 Okay that sounds good. Thank you very much!😀

[@jamesgamesplus5752]

amazing video

[@OSC1990]

Thanks! Glad you feel that way - Cheers, Mitch

[@ninanani1208]

Do we need to combine the expected values to get it to more than 5?

[@jacquelinembaya6866]

Thank you so much very helpful video 🙌🏿🙏🏿🙏🏿

[@OSC1990]

You are very welcome!

[@garvbhatnagar3538]

AI HL P3 ND P2 TODAY! CRAZY VIDEOS, HELPED ALOT!!

[@OSC1990]

Good luck on the exam! :)

[@yaramashal7640]

You're the best.

[@OSC1990]

You're not so bad yourself! :)