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2-4 example13

# 2-4 example13 - Student Grady Simonton Course Math119...

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Unformatted text preview: Student: Grady Simonton Course: Math119: Elementary Statistics - Spring 2.010 - CRN: 49239 Instructor: Shawn Parvini - 16 weeks Date: 2/18/10 Book: Triola: Elementary Statistics, 11e Time: 11:13 ANI A format for back-to-back stemplots representing the pulse A stemplot represents quantitative data by separating each rate of females and males from the given data is shown value into the stem (such as the leftmost digit) and the leaf below. Complete the back-to-back stemplot, then compare (such as the rightmost digit). The stems and leaves are the results. arranged in increasing order (beginning at the stem), not the order in which they occur in the original list. Females 60 64 65 67 68 68 69 73 77 78 To make it easier to complete the stemplot, ﬁrst arrange the 79 79 81 83 84 84 87 89101127 . . . . . Males pulse rates in increasing order. Begin Wlth the pulse rates 50 54 56 63 64 66 66 66 67 68 f‘" “mm 69 69 72 72 76 80 81 81 83 89 Females 60 64 65 67 68 68 69 73 77 78 79 79 81 83 84 84 87 89101127 6 7 Now order the pulse rates for men. 8 Males 9 50 54 56 63 64 66 66 66 67 68 10 69 69 72 72 76 80 81 81 83 89 11 12 Notice that the pulse rates are now shown in increasing order in the problem statement. The completed back-to-back stemplot is shown below. Women Stem (tens) Men 988754 6 346667899 99873 7 226 974431 8 01 139 9 l 10 1 l 7 12 Compare the results. The rows of digits in a stemplot are similar in nature to the bars in a histogram. By turning the stemplot on its side, one can see a distribution of the data. Compare the distributions of pulse rates of men and women. Page 1 ...
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