110 The Following Isa Survey Of People Who Went To A Physician Who Were Asked What Their Weight Was And What Their Ldl 1 (31.54 KiB) Viewed 21 times
110 The Following Isa Survey Of People Who Went To A Physician Who Were Asked What Their Weight Was And What Their Ldl 2 (31.54 KiB) Viewed 21 times
110) The following isa survey of people who went to a physician who were asked what their weight was and what their LDL cholesterol level wat Weight (in Pounds) Cholesterol (in LDL points) 60 150 50 200 120 70 220 45 300 30 100 25 4) Does there appear to be a linear cottelation between weight and cholesterol? Why or why not? You may use the following statistics if you wish, where weight, and y = cholesterol 1 = 181.67 = 73,87, = 46.67, ,= 17.22 (1 point) b) If you remove the person who weighs 100 pounds from the survey, the summary statistics for the remaining five participants 1 = 198, = 69.42 5 - 51, 5, -15.17. = -0.99487059 Does this person who weighs 100 pounds appear to be an influential participant in the linear correlation between weight and cholesterol? Explain why or why not (1 point) c) Use the first five participants (everyone but the 100 pound person to find the linear regression model that will predict someone's HDL cholesterol level given their weight in pounds. You may use the commary statistics from purtb) (2 points) d) Use the model from parte) to appreciate the HDL cholesterol level of a person who weighs 180 poundi. (1 point) c) Find the residual of the 300 pound person from the survey from the linear regression line from parte). Does your model overestimate or underestimate the cholesterol of this 300 pound person? (1 point)
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