Wednesday, November 3, 2010

zScores























Yes, the slides are in backwards order, so you have to read from top to bottom. Sorry for that.







On Tuesday, we learned about zScores. It was a very short class, so we didn't have a lot of time to practice it.





A zScore is how many standard deviations away from the mean you are.



Chuck the Walleye, in the example above, had a zScore of 0.3.
Alfred, also in an example above, had a zScore of 4.





To find a zScore, there is a very easy formula:
z= (x - mean) / standard deviation










It won't let me upload the recording at this time, so I will try to put it on at a later date.

-Austin

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