You are investigating the link between the number of customers visiting a website (X) and the number of products sold (Y). You get the following results in Excel: Sales vs Visitors Sales 100 95 90 85 80 75 70 65 60 55 50 5000 5500 6000 (a) What is the slope of the regression line? equation located below the regression line) 6500 y = 0.0088x + 18.48 R²=0.7026 7000 Visitors 7500 8000 8500 (see information in the picture - (b) Write the regression equation, y = 0.0088x + 18.48 picture - equation located below the regression line) (c) If the website has 5,600 visitors this month, how many sales per month would you expect? (see information in the

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
icon
Related questions
Question
**Understanding Sales and Visitors Data Through Regression Analysis**

You are investigating the link between the number of customers visiting a website (X) and the number of products sold (Y). The following is a regression analysis that provides insight into this relationship based on the data collected in Excel.

**Graph Analysis: Sales vs Visitors**

The scatter plot graph titled "Sales vs Visitors" visualizes the relationship between the number of website visitors and the number of sales. The X-axis represents the number of visitors, ranging from 5000 to 8500. The Y-axis represents the number of sales, ranging from 50 to 100. Each blue dot in the scatter plot corresponds to a pair of data points indicating the number of visitors and the number of sales.

A regression line is plotted through the data points, which aims to best fit the given data. The dotted line depicts the regression equation: 
\[ y = 0.0088x + 18.48 \]
with an R-squared value, \( R^2 = 0.7026 \), indicating the degree of variance explained by the model.

**Questions and Solutions:**

**(a) What is the slope of the regression line?**

To find the slope, refer to the regression equation provided in the graph: \( y = 0.0088x + 18.48 \).
- The slope is the coefficient of \( x \): **0.0088**.

**(b) Write the regression equation, \( y \)**

The regression equation as indicated in the graph is:
\[ y = 0.0088x + 18.48 \]

**(c) If the website has 5,600 visitors this month, how many sales per month would you expect?**

Using the regression equation \( y = 0.0088x + 18.48 \):
- Substitute \( x = 5600 \):
\[ y = 0.0088(5600) + 18.48 \]
\[ y = 49.28 + 18.48 \]
\[ y = 67.76 \]

Therefore, if the website has 5,600 visitors, you can expect approximately **67.76 sales** per month.
Transcribed Image Text:**Understanding Sales and Visitors Data Through Regression Analysis** You are investigating the link between the number of customers visiting a website (X) and the number of products sold (Y). The following is a regression analysis that provides insight into this relationship based on the data collected in Excel. **Graph Analysis: Sales vs Visitors** The scatter plot graph titled "Sales vs Visitors" visualizes the relationship between the number of website visitors and the number of sales. The X-axis represents the number of visitors, ranging from 5000 to 8500. The Y-axis represents the number of sales, ranging from 50 to 100. Each blue dot in the scatter plot corresponds to a pair of data points indicating the number of visitors and the number of sales. A regression line is plotted through the data points, which aims to best fit the given data. The dotted line depicts the regression equation: \[ y = 0.0088x + 18.48 \] with an R-squared value, \( R^2 = 0.7026 \), indicating the degree of variance explained by the model. **Questions and Solutions:** **(a) What is the slope of the regression line?** To find the slope, refer to the regression equation provided in the graph: \( y = 0.0088x + 18.48 \). - The slope is the coefficient of \( x \): **0.0088**. **(b) Write the regression equation, \( y \)** The regression equation as indicated in the graph is: \[ y = 0.0088x + 18.48 \] **(c) If the website has 5,600 visitors this month, how many sales per month would you expect?** Using the regression equation \( y = 0.0088x + 18.48 \): - Substitute \( x = 5600 \): \[ y = 0.0088(5600) + 18.48 \] \[ y = 49.28 + 18.48 \] \[ y = 67.76 \] Therefore, if the website has 5,600 visitors, you can expect approximately **67.76 sales** per month.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 5 steps with 8 images

Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Advanced Engineering Mathematics
Advanced Engineering Mathematics
Advanced Math
ISBN:
9780470458365
Author:
Erwin Kreyszig
Publisher:
Wiley, John & Sons, Incorporated
Numerical Methods for Engineers
Numerical Methods for Engineers
Advanced Math
ISBN:
9780073397924
Author:
Steven C. Chapra Dr., Raymond P. Canale
Publisher:
McGraw-Hill Education
Introductory Mathematics for Engineering Applicat…
Introductory Mathematics for Engineering Applicat…
Advanced Math
ISBN:
9781118141809
Author:
Nathan Klingbeil
Publisher:
WILEY
Mathematics For Machine Technology
Mathematics For Machine Technology
Advanced Math
ISBN:
9781337798310
Author:
Peterson, John.
Publisher:
Cengage Learning,
Basic Technical Mathematics
Basic Technical Mathematics
Advanced Math
ISBN:
9780134437705
Author:
Washington
Publisher:
PEARSON
Topology
Topology
Advanced Math
ISBN:
9780134689517
Author:
Munkres, James R.
Publisher:
Pearson,