STAT 1124 Mid Term 1 Model Answers - Page 1 STAT 1124...

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Page 1STAT 1124 Section 2Mid Term 1February 12, 2009Model AnswersYou have 55 minutes to complete the test.Justify your answers in order to receive full creditThe total number of points is 281.Daily rainfall (in millimeters) was recorded over a 30-year period in a coastal town inBritish Columbia. For each year, the day that had the greatest amount of rainfall wasidentified. Therefore, in total, there are 30 data points, one for each year. Thefollowing is a summary of this data set:Sample Size30Mean126.6Standard Deviation57.5Minimum47.5Maximum271.8Median116.3Q184.6Q3154.4a)Describe the distribution of the data set. Justify your answer (2 points)
b)Use a graphical tool to support your description in a) (2 points)47.5
Page 2c)Are there any outliers? (2 points)
2.In a study on fitness program for 45-54 year-old males, measures of weight andheight were taken from 24 program participants so as to establish a standard forweight given the height. This data is summarized in the scatterplot below.Height versus Weighta)Are there a response variable and an explanatory variable for this data set? Ifthere are, what are they? (2 points)

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Term
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