11.7 Standard Deviation SWBAT: -Find the standard deviation and variance of a set of values. -Apply standard deviation and variance.

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Presentation transcript:

11.7 Standard Deviation SWBAT: -Find the standard deviation and variance of a set of values. -Apply standard deviation and variance.

Vocabulary

EX 1 – What are the mean, variance, and standard deviation of these values?

EX 1 Continued

EX 2 – What are the mean, variance, and standard deviation of these values?

EX 3 – The table displays the number of U.S. hurricane strikes by decade from the years 1851 to What are the mean and standard deviation for this data set?

Using Standard Deviation to Describe Data

COMMERCIAL BREAK!!

The Normal Bell Curve

What does this really mean?

EX 4 - Use the U.S. hurricane-strike data from problem 3. Within how many standard deviations from the mean do all of the values fall? All of the values fall within two standard deviations of the mean.