QuickHelper

(10)

$20/per page/

About QuickHelper

Levels Tought:
Elementary,High School,College,University,PHD

Expertise:
Accounting,Applied Sciences See all
Accounting,Applied Sciences,Business & Finance,Chemistry,Engineering,Health & Medical Hide all
Teaching Since: May 2017
Last Sign in: 353 Weeks Ago
Questions Answered: 20103
Tutorials Posted: 20155

Education

  • MBA, PHD
    Phoniex
    Jul-2007 - Jun-2012

Experience

  • Corportae Manager
    ChevronTexaco Corporation
    Feb-2009 - Nov-2016

Category > Accounting Posted 04 Sep 2017 My Price 11.00

Linear Correlation, statistics assignment help

Question description

 

The paired data below consists of test scores and hours of preparation for 5 randomly selected students. Use this data set to answer the questions below:

x Hours of preparation 5 2 9 6 10

y Test score 64 48 72 73 80

1. Use the given data to find the correlation coefficient r, regression equation and scatter plot in MS Excel.

Solution:

Instructor Comments:

2. Based on the linear correlation coefficient r, is this a good model? Explain.

Solution:

Instructor Comments:

3. What is the best predicted test score for a student who spent 7 hours preparing for the test?

Solution:

Instructor Comments:

4. Find the standard error . Use formula or MS Excel.

Solution:

Instructor Comments:

5. Find the 99% prediction interval for the test score of a person who spent 7 hours preparing for the test.

Solution:

Instructor Comments:

6. Find the explained variation.

Solution:

Instructor Comments:

7. Find the unexplained variation.

Solution:

Instructor Comments:

8. Find the total variation.

Solution:

Instructor Comments:

9. Find the value of r2 and explain its meaning.

Solution:

Instructor Comments:

10. If the data point ( 3, 100) is added to the data set, how would this effect the results of the regression analysis? Is this data point an outlier, influential point or both? Explain.

Solution:

Instructor Comments:

Answers

QuickHelper
(10)
Status NEW Posted 04 Sep 2017 06:09 AM My Price 11.00

Hel-----------lo -----------Sir-----------/Ma-----------dam----------- T-----------han-----------k Y-----------ou -----------for----------- us-----------ing----------- ou-----------r w-----------ebs-----------ite----------- an-----------d a-----------cqu-----------isi-----------tio-----------n o-----------f m-----------y p-----------ost-----------ed -----------sol-----------uti-----------on.----------- Pl-----------eas-----------e p-----------ing----------- me----------- on----------- ch-----------at -----------I a-----------m o-----------nli-----------ne -----------or -----------inb-----------ox -----------me -----------a m-----------ess-----------age----------- I -----------wil-----------l

Not Rated(0)