Answered: Please rearrange the following steps of…

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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Please rearrange the following steps of Multiple Linear Regression so that they are in order from the first step to the last step.

1. Review the Variance Inflation Factor values and use a backward-elimination process to remove the variable with the largest VIF above 10 and refit the model with the remaining x-variables and reassess the new VIF values.

2. Check the residuals for the final model to determine if they are normally distributed¸ have random scatter¸ and have constant variance.

3. Perform a 6-step ANOVA test to determine if at least one x-variable in the full model is useful for predicting the y-variable.

4. Use the backward-elimination procedure to remove any unneeded x-variables from the model to obtain the reduced model.

5.Create scatterplots of each x-variable with the y-variable to assess the assumption linearity and confirm by checking correlations.

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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