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week 6 assignment

# week 6 assignment - 2 Add the trendline 3 What is the...

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Case Study #3 Linear Regression We want to analyze the following problem with linear regression: Manatees are large, gentle sea creatures that live along the Florida coast. Many manatees are killed or injured by power boats. The table below gives data on power boat registrations (in thousands) and the number of manatees killed by boats in Florida in the years 1977 to 1990. Year Boats (1000) Manatees killed Year Boats (1000) Manatees killed 1977 447 13 1984 559 34 1978 460 21 1985 585 33 1979 481 24 1986 614 33 1980 498 16 1987 645 39 1981 513 24 1988 675 43 1982 512 20 1989 711 50 1983 526 15 1990 719 47 1. Set up a scatter diagram. Make sure it is titled and labeled appropriately.
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Unformatted text preview: 2. Add the trendline. 3. What is the equation of the trendline? 4. Interpret the meaning for the y-intercept for this problem in terms of manatees and boats. 5. Interpret the meaning of the slope for this problem in terms of manatees and boats. 6. What is the value of r (correlation coefficient) ? 7. What does r tell you about the relationship between the number of boats and the number of manatees killed? 8. Predict the number of manatees that will be killed when 750,000 boats are registered....
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