In regression analysis

1. In regression analysis, the residuals represent the:
A. difference between the actual y values and their predicted values
B. difference between the actual x values and their predicted values
C. square root of the coefficient of determination
D. change in y per unit change in x

2.In the simple linear regression model, the slope represents the:
A. value of x when y = 0
B. change in y per unit change in x
C. change in x per unit change in y
D. value of y when x = 0

Don't use plagiarized sources. Get Your Custom Essay on
In regression analysis
Just from $13/Page
Order Essay

3.The coefficient of determination R2 measures the amount of:
A. variation in y that is unexplained by variation in x
B. variation in x that is unexplained by variation in y
C. variation in y that is explained by variation in x
D. variation in x that is explained by variation in y

4.If we are interested in determining whether two variables are linearly related, it is necessary to:
A. perform the t-test of the coefficient of correlation ρ
B. perform the t-test of the slope β1
C. either A or B since they are identical
D. calculate the regression standard error s

order the answer

5.Which of the following statistics and procedures can be used to determine whether a linear model should be employed?
A. The standard error of estimate
B. The t-test of the slope
C.The coefficient of determination
D. All of the above answers are correct

6.The regression standard error s is given by:
A. SSE/(n−2)
B. √SSE/(n−2)
C. (√SSE/(n−2)) (whole thing is under √)
D. SSE/√n−2

7.The symbol for the sample coefficient of correlation is:

B. ρ
C. ρ2
D. r2

8. Given the least squares regression line yˆ=−2.48+1.63x, and a coefficient of determination of 0.81, the coefficient of correlation is:
A. -0.85
B. 0.90
C. 0.85
D. -0.90

Get 20% Discount on This Paper
Pages (550 words)
Approximate price: -

Try it now!

Get 20% Discount on This Paper

We'll send you the first draft for approval by at
Total price:
$0.00

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Our Services

Australia Assessments has gained an international reputation of being the leading website in custom assignment writing services. Once you give us the instructions of your paper through the order form, we will complete the rest.

Essays

Essay Writing Services

As we work towards providing the best custom assignment services, our company provides assignment services for any type of academic essay. We will help you develop professionally written essays that are rich in content and free from plagiarism.

Admissions

Admission and Business Papers

Our skilled team of professional writers will ensure that we help you craft a remarkable admission essay for your desired Master's program in your institution of choice. We won't stop there. Once you enter the job market, we will be available to secure you a position at your desired worksite by creating an outstanding portfolio or resume.

Editing

Editing and Proofreading

Our editorial team is always available for all editing and proofreading services. They check completed papers by our writers and also provide professional opinions to papers completed by our clients.

Coursework

Technical papers

We harbor professional academic writers with different qualifications in diverse academic fields. As such, we are capable of handling both simple and technical papers. Ensure that you provide us with correct and complete instructions in the order form.