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Part I Practice Problems on Descriptive Statistics from Formula Reviews From Quick Notes Statistics may help with these problems.
Calculate the following using this sample data. Where
appropriate, state the symbol for the
Data: 20, 6, 15, 22, 13, 9, 2, 20, 10
5. Standard Deviation
7. 85th percentile
8. Third decile
9. Interquartile range
10. Use a paragraph or two containing complete sentences to define two variables, one that is skewed positively and one that is skewed negatively. Explain why you think the data is skewed.
|1) 13 2) 13 3) 20 4) 47.25 5) 6.87 6) 0 7) 20.3 8) 9.2 9) 20.0 - 8.25 = 11.75 10) Income is skewed to the right. Hopefully, hours studying is skewed to the left.||
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