A leading company established in Jamaica is planning to extend its marketing region to include the entire Caribbean. In order to predict its sales in this new region, the company has asked you to develop a linear regression of the company's sales on the price of the good. The following data was supplied by the marketing department: Sales 418 384 343 407 432 194 231 207 89 Price 98 386 255 444 149 427 195 (a) Decide which variable should be the independent variable and which should be the dependent variable. Justify your decision. (b) Prepare a scatterplot of the data points. Does it appear from inspection that there is a relationship between the variables? Why or why not? (c) Compute Σ.Χ, ΣΧ, ΣΥ, ΣΥ and Σ ΧΥ.
A leading company established in Jamaica is planning to extend its marketing region to include the entire Caribbean. In order to predict its sales in this new region, the company has asked you to develop a linear regression of the company's sales on the price of the good. The following data was supplied by the marketing department: Sales 418 384 343 407 432 194 231 207 89 Price 98 386 255 444 149 427 195 (a) Decide which variable should be the independent variable and which should be the dependent variable. Justify your decision. (b) Prepare a scatterplot of the data points. Does it appear from inspection that there is a relationship between the variables? Why or why not? (c) Compute Σ.Χ, ΣΧ, ΣΥ, ΣΥ and Σ ΧΥ.
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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