W1s - WS 1 1016-351 Coverage 1.1 1.2 Dr Chulmin Kim KEY 1...

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WS solution for Probability (KIM) Page 1 WS # 1: 1016-351: Coverage - 1.1, 1.2: Dr. Chulmin Kim KEY 1. Identify whether the variable is categorical or quantitative . a. SAT Math scores for 10 randomly selected students in Rochester in 2007: 750, 610, 570, 750, 670, 480, 580, 550, 590, 680 Answer: quantitative b. Each of 10 employees from RIT was asked what their mode of transit is. Data are: 1, 2, 2, 3, 4, 1, 1, 3, 2, 2 (Here, 1=car, 2=bus, 3=walk, 4=bike.) Answer: categorical c. Eye Color (brown, green, black) Answer: categorical d. Height Answer: quantitative 2. Please refer to the following data. 86, 93, 45, 49, 51, 44, 77, 74, 92, 80 Make the stem-plot. [Hint: Stem unit here is ten. So leaf unit is one.] [1pt.] Answer: 4 | 4 5 9 5 | 1 6 | 7 | 4 7 8 | 0 6 9 | 2 3
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WS solution for Probability (KIM) Page 2 3. Temperature transducers of a certain type are shipped in batches of 50. A sample of 60 batches was selected, and the number of transducers in each batch not conforming to design specifications was determined, resulting in the following data:
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