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section_problems_1_spring10

section_problems_1_spring10 - plots in each group Group 1...

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Section Problems #1 Circle all of your final answers. From the book, do: 1.62 (page 49, refers to page 24) Note that the “stems are whole percents and the leaves are tenths of a percent” so the first number is 5.7. For part b, explicitly list all of the values that are outliers (list the numbers). Then do: #2) “Conservationists have despaired over destruction of tropical rainforest by logging, clearing, and burning.” These words begin a report on a statistical study of the effects of logging in Borneo. Researchers compared forest plots that had never been logged (Group 1) with similar plots nearby that had been logged 1 year earlier (Group 2) and 8 years earlier (Group 3). All plots were 0.1 hectare in area. Here are the counts of trees for
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Unformatted text preview: plots in each group: Group 1 27 22 29 21 19 33 16 20 24 27 28 19 Group 2 12 12 15 9 20 18 17 14 14 2 17 19 Group 3 18 4 22 15 18 19 22 12 12 Draw a separate stemplot for each group (split each stem into two for each stemplot). Calculate the mean and standard deviation for Group 1. Round the mean to two decimal places. Use that number to calculate the standard deviation. Round the standard deviation to two decimal places. #3) Consider a data set that includes every whole number from 1 to 111: 1, 2, 3, 4, 5,…. .111 What is the five-number summary of this data set? #4) Consider a data set that includes every whole number from 1 to 114: 1, 2, 3, 4, 5,…. .112, 113, 114 What is the five-number summary of this data set?...
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