How To... Perform a Chi-Square Test (By Hand)

Also known as a "Goodness of Fit" test, use this single sample Chi-Square test to determine if there is a significant difference between Observed and Expected values. This video shows a step-by-step method for calculating Chi-square.

[WenZ]

This amazing video taught me chi sqaure in 5 minutes while my professor has been trying to teach us for 5 classes already. You're amazing!

[marshallliberman]

Imagine having to sift through tons of over complicated and long videos just to find out this gem was here all along. Thank you

[adsalamaable]

btw, only genius makes very complicated things look very simple :)

[frog]

Sir your video exceeded my expectations. I gained a good understanding of the subject matter. Please accept my thanks.

[katyawhittam]

wow so helpful! I was completely overwhelmed at the notion of trying to tackle this for my psychology class but you've just made it so simple!

[gotmoosefur]

Its like being sweet-talked into learning

[naomondicho]

I AM GLAD I RAN INTO THIS VIDEO. NEVER HAVE I GOTTEN SUCHA SIMPLE EASY TO FOLLOW EXPALNATION TO A COMPLICATED CONCEPT LIKE TODAY. BLESSINGS!

[Teeshhx]

helpful!!!! I have a test tomorrow and this really helped me understand it better. Thank you!

[forlinginst]

It takes a genuinely good teacher to explain a complex thing in such straightforward terms.

[maryammalek]

you made it so much easier. didn't study this throughout the year, but in 7 minutes. thank you so much, life savior. :)

[MjaySenoj]

THANK YOU SO MUCH IVE BEEN WORKING THIS OUT FOR A FULL WEEK AND YOUR THE FIRST TO EXPLAIN MY WEAK POINT PROPERLY

[werkitbaby]

Just saved my life on an exam. THANKS!!!!

[CyberKestrel]

This is by far the best Chi-Square example I have found! Thank you so much for the excellent video!!!!

[GirlAlmightyx]

I am currently revising for my assignment & you literally saved my life, thank you!

[jonstfrancis]

That was put over so simply and explained everything so well! Thank you.

[lindabrown]

Dear Mr. O'Loughlin, I have tried to use chi-square in my forensics class. It has been used, by me, to see if there is a correlation between the medullary structure of animal hairs and nocturnality; which came up as a possible explanation for the differences in medullary structure, by chance, during a lesson. Your explanation is clear and accessible for high school students. Thank you. And, oh yes, the probability for animals that share the characteristic of cell-like structures, walking and running locomotor patterns and nocturnal activity patterns is 10.48. This is well beyond the 7.81 critical value...so further investigation is warranted.
Best regards,
Linda Brown
Bronx, NY

[jamesallen]

Sat through two hours of lectures on this and was none the wiser. 7 1/2 minutes here and it makes perfect sense!

[kinaferrante]

I've been trying to figure out how to do the chi-square question on my statistics assignment for two days now. This video cleared it right up and I understand now. Thank you!

[melaniedawkins]

You're my favorite person on the internet right now! Thanks sooo much

[meenakshiraghavan]

Your videos are extremely informative. I'm glad I found your videos. Keep up the good work, and keep uploading more videos. Students like me could always use them.