Use the following linear regression equation to answer the questions. x1 = 2.0 + 3.6x2 – 7.8x3 + 2.1x4 a) Which variables are the explanatory variables? (Select all that apply.) x3 x1 x2 x4 (b) Which number is the constant term? List the coefficients with their corresponding explanatory variables. constant _____ x2 coefficient _____ x3 coefficient _____ x4 coefficient ______ (c) If x2 = 9, x3 = 3, and x4 = 6, what is the predicted value for x1? (Use 1 decimal place.)
Use the following linear regression equation to answer the questions. x1 = 2.0 + 3.6x2 – 7.8x3 + 2.1x4 a) Which variables are the explanatory variables? (Select all that apply.) x3 x1 x2 x4 (b) Which number is the constant term? List the coefficients with their corresponding explanatory variables. constant _____ x2 coefficient _____ x3 coefficient _____ x4 coefficient ______ (c) If x2 = 9, x3 = 3, and x4 = 6, what is the predicted value for x1? (Use 1 decimal place.)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
Use the following linear regression equation to answer the questions.
x1 = 2.0 + 3.6x2 – 7.8x3 + 2.1x4
a) Which variables are the explanatory variables? (Select all that apply.)
x3
x1
x2
x4
(b) Which number is the constant term? List the coefficients with their corresponding explanatory variables.
(c) If x2 = 9, x3 = 3, and x4 = 6, what is the predicted value for x1? (Use 1 decimal place.)
constant | _____ |
x2 coefficient | _____ |
x3 coefficient | _____ |
x4 coefficient | ______ |
(c) If x2 = 9, x3 = 3, and x4 = 6, what is the predicted value for x1? (Use 1 decimal place.)
Expert Solution
Step 1
Regression equation given in the question is -
X1= 2.0+ 3.6X2 – 7.8X3 + 2.1X4
As we know for a regression equation Y= aX1 + bX2 +C
Y is dependent variable because the value of y is depend on X1 and X2 .on the other hand variable X1 and X2 are independent/explanatory variable.
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