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Unformatted text preview: c. Give the ve number summary and explain briey how it reects the shape of the distribution. d. Are there any outliers in the data? e. Construct a boxplot of the data. Again, explain briey how it reects the shape of the distribution. 3. You are given n=10 measurements: 4 2 2 4 2 2 3 3 3 2. a. Calculate the sample mean. b. Calculate the sample standard deviation. c. Explain heuristically what information is given by the above quantities (ie. sample mean and standard deviation). d. Why do statisticians report the standard deviation and not the variance? 4. A sample of n=50 lifetimes for Canadian men is provided in the le lifetimes.txt. a. Calculate an appropriate measure of centre for this data set  make sure to justify your choice fully! b. What proportion of the sample survived to age 80? c. Is there anything unusual you notice about this data?...
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 Spring '10
 AugustineWong
 Math

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