Simple Explanation of Chi-Squared

An explanation of how to compute the chi-squared statistic for independent measures of nominal data.

Category:

Education

Tags:

• statistics
• chi-squared
• nominal data

[lennongirl5]

thank you thank you thank you! you saved my life with this video

[jdeisenberg]

@lennongirl5 Thanks for the kind words. Glad to be of assistance.

[little1intheuk]

Fantastic video! I finally understand. Thank you

[jdeisenberg]

@little1intheuk Thanks; glad you like the video.

[PersnickertyTaurus]

@kenrickAW - yes.

[Franzzisko]

Thaank you so much! Finally we got it!:)

[nickleblanc190]

Thank you very much. My lab manual explains how to do it but it confused the hell outta me I thought I would never understand it :). Great video!!!

[kylebinder96]

Its interesting to think we could replace a teacher with this video and have kids learn better. Thanks for the help!!!

[joshuacivelli]

very well done, my professor is a robot using every different subscript know to man!

[kenrickAW]

My answer for the chi-square is 12.2778... @.@ did i made a mistake?



[jdeisenberg]

@Jonisto You can try a calculator like the one Texas A&M University's site; do a google search for "chi-squared calculator tamu"

[Jonisto]

@jdeisenberg Thank you, I figured it out in the end :) One more question though, If the table is not big enough, for example, the one im using in the exam only starts at .10 so if the chi-squared is less than 2.706 what would you do?

By the way this is easily the best explanation of hypothesis testing on youtube (I've been looking around all day!) Big thumbs up from me!

[jdeisenberg]

@Jonisto Saw your comment before it was removed; the p-value comes from a table (usually in the back of your statistics book) or from a computer program that calculates chi squared. Yes, I should have made that more explicit.