Math Homework

Ask Math Questions. Get Help With Your Math Homework

Ask an Expert,

Get an Answer ASAP!

Customer Question

For the following data: X y 1 2 4 7 3 5 2 1 5 14 3 7 a. Find...

For the following data:

X y

1 2

4 7

3 5

2 1

5 14

3 7

a. Find the regression equation predicting Y from X.

b. Use the regression equation to find a predicted Y from each X.

c. Find the difference between actual Y value and the predicted Y value for each individual, square the differences, and add the squared values to obtain SS residual.

d. Calculate the Pearson correlation for these data. Use r2 and SSy to compute SSresidual with Equation 15.18. You should obtain the same value as in part c.

(Equation 15.18 – Unpredicted variability = SSresidual= (1-r2)SSy)

X y

1 2

4 7

3 5

2 1

5 14

3 7

a. Find the regression equation predicting Y from X.

b. Use the regression equation to find a predicted Y from each X.

c. Find the difference between actual Y value and the predicted Y value for each individual, square the differences, and add the squared values to obtain SS residual.

d. Calculate the Pearson correlation for these data. Use r2 and SSy to compute SSresidual with Equation 15.18. You should obtain the same value as in part c.

(Equation 15.18 – Unpredicted variability = SSresidual= (1-r2)SSy)

Show More

Show Less

Was this answer helpful?

Describe your issueThe assistant will guide you

Chat 1:1 with a math tutor or teacherLicensed Experts are available 24/7

100% satisfaction guaranteeGet all the answers you need

Related Math Homework Questions

1. A researcher is testing a null hypothesis that states:

1. A researcher is testing a null hypothesis that states: H: μ = 50. A sample of 25 scores is selected and the mean is M = 55. Assuming that the sample variance is s² = 100, compute the estimated stan… read more

Bivariate data obtained for the paired variables and are

Bivariate data obtained for the paired variables and are shown below, in the table labelled "Sample data." These data are plotted in the scatter plot in Figure 1, which also displays the least-squares… read more

1. A company test marketed a product in four different markets

1. A company test marketed a product in four different markets with a different price in each market. The quantity sold and the price in each market is shown on your worksheet as Question1. a. What is… read more

9.Which is a time series A) The M1 component of the money

9.Which is a time series? A) The M1 component of the money supply for the U.S. (n = 20 quarters). B) The unemployment rates for the U.S. states (n = 50 states). C) The Gross Domestic Product for the E… read more

For the following data X Y 1 2 4 7 3 5 2 1 5 14 3 7 a.

For the following data: X Y 1 2 4 7 3 5 2 1 5 14 3 7 a. Find the regression equation for predicting Y from X. SP = SSx = a = b = Ŷ = b. Use the regression equation to find a predicted Y for each X. X … read more

Week 10 Correlation and Introduction to Regression - Quiz

Week 10: Correlation and Introduction to Regression - Quiz Help -------------------------------------------------------------------------------- -------------------------------------------------------… read more

A set of n 5 pairs of X and Y values has X 10, Y 20,

A set of n = 5 pairs of X and Y values has X = 10, Y = 20, and XY = 10. For this set of scores, what is the value of SP? a. -10 b. -40 c. 30 d. -30 For the following data, SP equals _____. X Y 2 4 1 2… read more

Use the following data for parts (a) through (f). x 5 7 3 16 12 9 y 8 9 11 27 15 13 a.

Use the following data for parts (a) through (f). x 5 7 3 16 12 9 y 8 9 11 27 15 13 a. Determine the equation of the least squares regression line to predict y by x b. Using the x values, solve for th… read more

6.For the following scores, X Y 3 12 6 7 3 9 5 7 3 10 a.

6.For the following scores, X Y 3 12 6 7 3 9 5 7 3 10 a. Compute the Pearson correlation. b. With a small sample, a single point can have a large effect on the magnitude of the correlation. Change the… read more

1. The quick rule would say that in a bivariate scatter plot

1. The quick rule would say that in a bivariate scatter plot with 25 observations, a correlation of 0.45 is significantly different than zero (but just barely). [ ] True [ ] False 2. The least squares… read more

2. A set of n 5 pairs of X and Y values has X 10, Y 20,

2. A set of n = 5 pairs of X and Y values has X = 10, Y = 20, and XY = 60. For this set of scores, the value of SP is __________. A) –20 B) –28 C) 20 D) 60 3. A set of n = 5 pairs of X and Y values ha… read more

1. A.Use the regression equation for finding a predicted y

1. A.Use the regression equation for finding a predicted y for each x. b. Find the difference between the actual y value for each individual, square the differences and add the squared differences to … read more

For the following data a. Find the regression equation for

For the following data: a. Find the regression equation for predicting Y from X. b. Use the regression equation to find a predicted Y from X. c. Find the difference between the actual Y and the predic… read more

1 What information is provided by the numerical value of the

1 What information is provided by the numerical value of the Pearson correlation? 12. X=0,1,2,3,4, Y=3,1,5,9,7 a. Compute the Pearson Correlation b. Multiply each x-value by 2 and compute the Pearson … read more

1. William used a sample of 68 U.S. cities to estimate the

1. William used a sample of 68 U.S. cities to estimate the relationship between Crime (annual property crimes per 100,000 persons) and Income (median income per capita). His estimated regression equat… read more

a) How does correlation analysis differ from regression anal

a) How does correlation analysis differ from regression analysis? (b) What does a correlation coefficient reveal? (c) State the quick rule for a significant correlation and explain its limitations. (d… read more

(a) How does correlation analysis differ from regression analysis

(a) How does correlation analysis differ from regression analysis? (b) What does a correlation coefficient reveal? (c) State the quick rule for a significant correlation and explain its limitations. (… read more

A study was done to determine if the number of days a student

A study was done to determine if the number of days a student is absent affects their final grade. The following data was obtained: Number of Days Absent 10 12&nbs p; 2 0 8 5 2 4 6 9 Final Grade 70 65… read more

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.

JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.

Web sites like justanswer.com/legal

...leave nothing to chance.

...leave nothing to chance.

Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.

Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.

I will tell you that...the things you have to go through to be an Expert are quite rigorous.

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

Los Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

Hesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

Kernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

Woodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

Elkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

Dallas, TX

< Previous | Next >

Mr. Gregory White

Master's Degree

92 satisfied customers

M.A., M.S. Education / Educational Administration

JACUSTOMER-yrynbdjl-

Master's Degree

49 satisfied customers

I have taught college Mathematics for the past 10 years.

SusanAthena

Master's Degree

41 satisfied customers

Tutor for Algebra, Geometry, Statistics. Explaining math in plain English.

Dr Arthur Rubin

Doctoral Degree

38 satisfied customers

Ph.D. in Mathematics, California Institute of Technology

mhasan420

Master's Degree

29 satisfied customers

BA Maths, Oxford

Don

Master's Degree

17 satisfied customers

M.S. Astronautical Engineering. Math/Science/Comp Tutor

judybailey61

Bachelor's Degree

17 satisfied customers

20 years teaching mathematics

< Previous | Next >

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.