Beachcomber Ltd in a local car dealership that sells used and new vehicles. The manager of the company wants to know how different variables affect the sales of his vehicles. A random sample of yearly data was taken with the view to testing the model: SALES=a+BAGE+YMIL+8ENG Where SALES= amount that a vehicle is sold for($000's), AGE = age of the vehicle, MIL= the total mileage of the vehicle at the point of sale and ENG = the size of the engine. The sample of data was processed using MINITAB and the following is an extract of the output obtained: The regression equation is ***** Coef StDev t-ratio p-value Predict or Constan 1.7586 0.2525 6.9648 0.0000 t 0.2124 0.3175 0.3586 AGE 0.5042 MIL -0.7527 -2.0991 ENG 4.8124 *** 7.7664 0.0000 Analysis of Variance Source DF ss MS Regressi 3 413.1291 138.709 **** 0.00 on 7 Error 50 457.7607 2.2888 Total 53
Beachcomber Ltd in a local car dealership that sells used and new vehicles. The manager of the company wants to know how different variables affect the sales of his vehicles. A random sample of yearly data was taken with the view to testing the model: SALES=a+BAGE+YMIL+8ENG Where SALES= amount that a vehicle is sold for($000's), AGE = age of the vehicle, MIL= the total mileage of the vehicle at the point of sale and ENG = the size of the engine. The sample of data was processed using MINITAB and the following is an extract of the output obtained: The regression equation is ***** Coef StDev t-ratio p-value Predict or Constan 1.7586 0.2525 6.9648 0.0000 t 0.2124 0.3175 0.3586 AGE 0.5042 MIL -0.7527 -2.0991 ENG 4.8124 *** 7.7664 0.0000 Analysis of Variance Source DF ss MS Regressi 3 413.1291 138.709 **** 0.00 on 7 Error 50 457.7607 2.2888 Total 53
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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Perform the F Test making sure to state the null and alternative hypothesis.
Given an interpretation of the term “R-sq” and comment on its value.
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