CK-12 Probability and Statistics - Advanced

(Marvins-Underground-K-12) #1

http://www.ck12.org Chapter 5. Normal Distribution


In this example, the standard deviation was 3 units. We can use these concepts to estimate the standard deviation of
a normally distributed data set.


Can you estimate the standard deviation of the distribution represented by the following histogram?


This distribution is fairly normal, so we could draw a density curve to approximate it as follows.


Now estimate the inflection points:

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