lecture_10_1

lecture_10_1 - Inference for regression Simple linear...

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Unformatted text preview: Inference for regression- Simple linear regression IPS chapter 10.1 © 2006 W.H. Freeman and Company Objectives (IPS chapter 10.1) Inference for simple linear regression Simple linear regression model Confidence interval for regression parameters Significance test for the slope Year Powerboats Dead Manatees 1977 447 13 1978 460 21 1979 481 24 1980 498 16 1981 513 24 1982 512 20 1983 526 15 1984 559 34 1985 585 33 1986 614 33 1987 645 39 1988 675 43 1989 711 50 1990 719 47 (in 1000’s) Does this regression line show the true relationship between the number of powerboats and dead Manatees? € ˆ y = 0.125 x- 41.4 The data in a scatterplot are a random sample from a population that may exhibit a linear relationship between x and y . Different sample different plot. ˆ y = 0.125 x- 41.4 Now we want to describe the population mean Simple linear regression model...
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lecture_10_1 - Inference for regression Simple linear...

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