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.

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter5: Inverse, Exponential, And Logarithmic Functions

Section5.2: Exponential Functions

Problem 60E

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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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