Use the following linear regression equation to answer the questions. X1 = 1.3 + 3.0x2 - 8.3x3 + 1.6x4 (a) Which variable is the response variable? O X1 X2 X3 X4 Which variables are the explanatory variables? (Select all that apply.) V XA V X3 O x2 X1 (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 = 8, x3 = 2, and x4 = 6, what is the predicted value for x1? (Use 1 decimal place.) (d) Explain how each coefficient can be thought of as a "slope" under certain conditions. O If we hold all other explanatory variables as fixed constants, then we can look at one coefficient as a "slope." If we hold all explanatory variables as fixed constants, the intercept can be thought of as a "slope." If we look at all coefficients together, the sum of them can be thought of as the overall "slope" of the regression line. If we look at all coefficients together, each one can be thought of as a "slope."

Use the following linear regression equation to answer the questions. X1 = 1.3 + 3.0x2 - 8.3x3 + 1.6x4 (a) Which variable is the response variable? O X1 X2 X3 X4 Which variables are the explanatory variables? (Select all that apply.) V XA V X3 O x2 X1 (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 = 8, x3 = 2, and x4 = 6, what is the predicted value for x1? (Use 1 decimal place.) (d) Explain how each coefficient can be thought of as a "slope" under certain conditions. O If we hold all other explanatory variables as fixed constants, then we can look at one coefficient as a "slope." If we hold all explanatory variables as fixed constants, the intercept can be thought of as a "slope." If we look at all coefficients together, the sum of them can be thought of as the overall "slope" of the regression line. If we look at all coefficients together, each one can be thought of as a "slope."

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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