HW 1 Solutions

# HW 1 Solutions -...

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http://www.stat.ucla.edu/~dinov/courses_students.dir/11/Winter/STAT13.1.dir/assignments.html 1 STAT 13, section 1, Winter 2011, UCLA Statistics HW 1; Problem Solution HW 1.1 (a) The stem-and-leaf diagram of dendritic segments can be constructed as: 1 | 7 2 | 001167778889999 3 | 011133455577 4 | 13589 5 | 114 (b) HW 1.2 (Frequency Table) # of segments frequency 17 1 20 2 21 2 26 1 27 3 28 3 29 4

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30 1 31 3 33 2 34 1 35 3 37 2 41 1 43 1 45 1 48 1 49 1 51 2 54 1 * You can do it with ranges instead of single values. HW 1.3
http://www.stat.ucla.edu/~dinov/courses_students.dir/11/Winter/STAT13.1.dir/assignments.html 3 Boxplot b goes with the histogram. First we can observe that each bin has length 2, and therefore the values in the data set should range from 12 or 13 to 35 or 36. In order to distinguish plots b and d, we look at the median of the histogram. Since the distribution has a median around 25, we would match the histogram with boxplot b instead of boxplot d whose

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HW 1 Solutions -...

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