Section_1.2_written_homework_for_mean_and_SD[1] - Homework...

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Homework for Section 1.2 - means, standard deviations 1. For each data set, make a histogram find f8e5 X and s mark the positions of f8e5 X and f8e5 X ± s on the histogram. a. 1, 3, 3, 3, 5 b. 1, 1, 3, 5, 5 c. 1, 1, 1, 2, 5 d. 1, 1, 1, 2, 20 (For this data, f8e5 X ! s will be a negative number.) 2. For which of the data sets in question 1 are the mean and standard deviations good measures of the center and spread? 3. A misleading graphic in the textbook: Look at the data summarized in the example at the top of page 44. The data is for the returns of two kinds of investments: common stocks and treasury bills. Which kind of investment has the larger standard deviation? Now look at the stemplots for the same data at the bottom of the page. Plot a is for stocks and plot b is for treasury bills. Which investment looks like it has a bigger standard deviation in the stemplots? How did they make it look that way? 4.
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This note was uploaded on 09/23/2011 for the course MATH 324 taught by Professor Staff during the Spring '08 term at S.F. State.

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Section_1.2_written_homework_for_mean_and_SD[1] - Homework...

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