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Statistics Notes

# Statistics Notes - AP Stat Chap 1 Sect 1 Enter data from...

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AP Stat Chap 1 Sect 1

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Enter data from table on pg. 10 into list 1. Create a histogram.
Describe histogram – center, shape, & spread.

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In the data regarding the percent of population by state of > 65 years of age the center falls at approximately 13%. There are 3 possible outliers: 4.9% - Alaska, 8.8% - Utah, and 18.6% - Florida. The spread of this data is approximately 10% to 16%, if we ignore the outliers. If we ignore the outliers the shape is somewhat normal.
Describe the center, shape, & spread of the histogram outlining the number of days of frost during April in Greenwich, England, over a 63 year period.

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The distribution of days of frost in April in Greenwich, England has a center of approx. 3 (31 < 3, 11=3, 23 > 3). This distribution is skewed to the right. There are no obvious outliers.
Create a stemplot from the data on pg. 10

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4 9 5 6 7 8 8 9 10 0 0 2 9 11 0 1 1 3 4 4 4 6 9 12 0 0 3 4 4 5 5 5 6 6 6 6 13 0 1 3 3 4 4 5 6 7 7 9 9 9 14 2 3 4 5 5 15 2 3 7 9 16 17 18 6

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This description would be the same as the description for the histogram –

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