At 5% significance level, is there evidence of a linear relationship between shelf space and sales? (use t-test for correlation coefficient) d. Determine the least square regression equation for this data.

At 5% significance level, is there evidence of a linear relationship between shelf space and sales? (use t-test for correlation coefficient) d. Determine the least square regression equation for this data.

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

c. At 5% significance level, is there evidence of a linear relationship between shelf space and sales? (use t-test for correlation coefficient) d. Determine the least square regression equation for this data.

Store
Shelf space (X) (feet)
Weekly sales (Y) ($)
1
5
160
5
220
3
140
4
10
190
5
10
240
10
260
7
15
230
8
15
270
15
280
10
20
260
11
20
290
12
20
310

Definition Definition Statistical measure used to assess the strength and direction of relationships between two variables. Correlation coefficients range between -1 and 1. A coefficient value of 0 indicates that there is no relationship between the variables, whereas a -1 or 1 indicates that there is a perfect negative or positive correlation.

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