Questions and Problems

1. Regression analysis is a statistical procedure for developing a mathematical equation that describes how:
a. one independent and one or more dependent variables are related
b. several independent and several dependent variables are related
c. one dependent and one or more independent variables are related.
d. None of the above answers is correct.
2. In a simple regression analysis (where Y is a dependent and X an independent variable), if the Y intercept is positive, then:
a. there is a positive correlation between X and Y
b. there is a negative correlation between X and Y
c. if X is increased, Y must also increase
d. if Y is increased, X must also increase
e. None of the above answers is correct.
3. In regression analysis, the variable that is being predicted is the:
a. dependent variable
b. independent variable
c. intervening variable
d. None of the above answers is correct.
4. A procedure used for finding the equation of a straight line that provides the best approximation for the relationship between the independent and dependent variables is the:
a. correlation analysis
b. mean squares method
c. least squares method
d. most squares method
e. None of the above answers is correct.

5. If the coefficient of determination is equal to 1, then the coefficient of correlation:
a. must also be equal to 1
b. can be either -1 or +1
c. can be any value between -1 to +1
d. must be -1
e. None of the above answers is correct.
6. In a regression analysis, the variable that is being predicted:
a. must have the same units as the variable doing the predicting
b. is the independent variable
c. is the dependent variable
d. usually is denoted by x
e. None of the above answers is correct.

7. Shown below is a partial computer output from a regression analysis.
Predictor Coefficient Stdev
Constant 10.00 2.00
X1 -2.00 1.50
X2 6.00 2.00
X3 -4.00 1.00
Analysis of Variance
Source of Degrees Sum of Mean
Variation of Freedom Squares Square F
Regression 60
Total 19 140
a. Use the above results and write the regression equation.
b. Compute the coefficient of determination and fully interpret its meaning.
c. At  = 0.05, test to see if there is a relation between X1 and Y.
d. At  = 0.05, test to see if there is a relation between X3 and Y.
e. Is the regression model significant? Perform an F test and let  = 0.05.

8. The Very Fresh Juice Company has developed a regression model relating sales (Y in $10,000s) with four independent variables. The four independent variables are price per unit (X1, in dollars), competitor’s price (X2, in dollars), advertising (X3, in $1,000s) and type of container used (X4) (1 = Cans and 0 = Bottles). Part of the regression results are shown below.
Analysis of Variance
Source of Degrees of Sum of
Variation Freedom Squares
Regression 4 283,940.60
Error (Residuals) 18 621,735.14
a. Compute the coefficient of determination and fully interpret its meaning.
b. Is the regression model significant? Explain what your answer implies. Let  = 0.05.
c. What has been the sample size for this analysis?

Calculate the price
Make an order in advance and get the best price
Pages (550 words)
*Price with a welcome 15% discount applied.
Pro tip: If you want to save more money and pay the lowest price, you need to set a more extended deadline.
We know how difficult it is to be a student these days. That's why our prices are one of the most affordable on the market, and there are no hidden fees.

Instead, we offer bonuses, discounts, and free services to make your experience outstanding.
How it works
Receive a 100% original paper that will pass Turnitin from a top essay writing service
step 1
Upload your instructions
Fill out the order form and provide paper details. You can even attach screenshots or add additional instructions later. If something is not clear or missing, the writer will contact you for clarification.
Pro service tips
How to get the most out of your experience with AssignmentHelpWeb
One writer throughout the entire course
If you like the writer, you can hire them again. Just copy & paste their ID on the order form ("Preferred Writer's ID" field). This way, your vocabulary will be uniform, and the writer will be aware of your needs.
The same paper from different writers
You can order essay or any other work from two different writers to choose the best one or give another version to a friend. This can be done through the add-on "Same paper from another writer."
Copy of sources used by the writer
Our college essay writers work with ScienceDirect and other databases. They can send you articles or materials used in PDF or through screenshots. Just tick the "Copy of sources" field on the order form.
See why 20k+ students have chosen us as their sole writing assistance provider
Check out the latest reviews and opinions submitted by real customers worldwide and make an informed decision.
The paper was EXCELLENT. Thank you
Customer 452449, September 23rd, 2022
Architecture, Building and Planning
The assignment was well written and the paper was delivered on time. I really enjoyed your services.
Customer 452441, September 23rd, 2022
excellent loved the services
Customer 452443, September 23rd, 2022
Job well done and completed in a timely fashioned!
Customer 452451, November 18th, 2022
Business Studies
Excellent service - thank you!
Customer 452469, February 20th, 2023
Business Studies
Job well done. Finish paper faster than expected. Thank you!
Customer 452451, October 3rd, 2022
Thanks a lot the paper was excellent
Customer 452453, October 26th, 2022
English 101
Very good job. I actually got an A
Customer 452443, September 25th, 2022
Public Administration
Excellent timely work
Customer 452451, April 19th, 2023
Excellent services will definitely come back
Customer 452441, September 23rd, 2022
Business Studies
Thank you!
Customer 452451, November 27th, 2022
Customer reviews in total
Current satisfaction rate
3 pages
Average paper length
Customers referred by a friend
15% OFF your first order
Use a coupon FIRST15 and enjoy expert help with any task at the most affordable price.
Claim my 15% OFF Order in Chat