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Unformatted text preview: Name: Statistics &amp; Probability Exam #1 (Chapters 1  6 ) Please Show Work, when possible! (If you don't, I can't give you partial credit!) 1. We collect data from 50 male students about their eye color, houri of homework they did last week, number of cigarettes they smoke daily and their student id number. a) Which variable is categorical? (Please explain, if unsure) b) Which variable is most likely to be bimodal? (Please explain, if unsure) c) Which variable is most likely to be Normal? (Please explain, if unsure) d) Which variable is an identifier? (Please explain, if unsure) 2. For the data whose distribution is shown, answer the following questions: a) The distribution is skewed to the b) Is the mean smaller or larger than the median? (Please explain, if you feel uncertain) c) Is it better to summarize the data with the mean and standard deviation or median and IQR? Explain why. 3. This is a multiple choice question. Just choose the best answer. Suppose that a Normal model . describes the acidity (pH) of rainwater, and that water tested after last week's storm had a zscore of 1.8. describes the acidity (pH) of rainwater, and that water tested after last week's storm had a zscore of 1....
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 Spring '08
 TBA
 Statistics, Probability

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