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Standard Deviation as a Ruler & the Normal Model - AP Stats - Ch 6 Part 1

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Steve Mays

on 10 September 2013

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Transcript of Standard Deviation as a Ruler & the Normal Model - AP Stats - Ch 6 Part 1

AP Stats - Chapter 6 Part 1
Standard Deviation as a Ruler
& The Normal Model

Wookies vs Ewoks
What are z-scores?
Shifting & Rescaling
What is "unusual"?
What is Normal?
The Empirical Rule
Using the Empirical Rule
Nearly Normal?
Calucator Part 1
Calucator Part 2
This dog looks just like a wookie.
See you in Stats class . . .
Always check to see if you data is unimodal and symmetric (bell-shaped).

Check this by making a histogram or a probability plot.

Never use the Normal model without checking that the data satisfies the Nearly Normal Condition.
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