A medical researcher wishes to see whether there is a relationship between a person’s age, cholesterol level, and systolic blood pressure. Eight people are randomly selected. The data is listed in the table. First, find the multiple regression equation. Next, determine the coefficient of determination. Then, use the regression equation to predict a person’s blood pressure reading if the person selected is 50 years old with a cholesterol reading of 220.   Age Cholesterol level Blood pressure Person 1 38 220 116 Person 2 41 225 120 Person 3 45 200 123 Person 4 48 190 131

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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 A medical researcher wishes to see whether there is a relationship between a person’s age, cholesterol level, and systolic blood pressure. Eight people are randomly selected. The data is listed in the table. First, find the multiple regression equation. Next, determine the coefficient of determination. Then, use the regression equation to predict a person’s blood pressure reading if the person selected is 50 years old with a cholesterol reading of 220.

  Age Cholesterol level Blood pressure
Person 1 38 220 116
Person 2 41 225 120
Person 3 45 200 123
Person 4 48 190 131
Person 5 51 250 142
Person 6 53 215 145
Person 7 57 200 148
Person 8 61 170 150

Discussion Prompts

Respond to the following prompts in your initial post:

  1. Identify the explanatory variables and response variable for the data.
  2. What is the multiple regression equation for the data?
  3. What is the coefficient of determination?
  4. If a person 50 years old with a cholesterol of 220 is selected, what is that person’s predicted blood pressure reading? 
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