Homework-Ch-03

# Homework-Ch-03 - Chapter 3 Homework[Over 50 points Due Tue...

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1 Chapter 3 Homework Due: Tue Aug 30 [Over 50 points] NAME: ___________________________________ 303. [Ch. 3; calc; 14 points] (Descriptive statistics) Given the following data set (12 entries) which represents a SAMPLE: 72 45 65 86 48 77 65 54 86 46 90 86 a. [4 p.] Calculate the range and the IQR. b. [6 p.] Calculate the mean, the median, and the mode. c. [4 p.] Calculate the variance and standard deviation.

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2 306. [Ch. 3; 36 points] (Sums and Products) Use the following data to answer questions (a) through (r): i Xi Yi --------------------- 1 3 -5 2 1 4 3 4 2 4 -1 0 5 3 3 6 -2 1 7 -1 -3 (a). [2 p.] i x (b). [2 p.] 6 2 ( 1) i i x
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