(Answered) Use the applet go to the correlation and regression applet

Statistics

Use the applet. Go to the Correlation and Regression applet. Click on the scatterplot to create a group of 10 points in the lower-right corner of the scatterplot with a strong straight-line pattern (correlation about -0.9). In Exercise 4.48 (page 176) you started to see that correlation r is not resistant. Now click the "Show least-squares line" box to display the regression line.

(a) Add one point at the upper left that is far from the other 10 points but exactly on the regression line. Why does this outlier have no effect on the line even though it changes the correlation?

(b) Now move this last point down until it is opposite the group of 10 points. You see that one end of the least-squares line chases this single point, while the other end remains near the middle of the original group of 10. What makes the last point so influential?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M92553373
Price:- $10

Verified Expert

Priced at $20 Now at $10, Verified Solution

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

1 according to the latest poll 750 adult respondents

1. According to the latest poll, 750 adult respondents believe in global warming. Construct a 95% confidence interval estimate of the proportion of adults who believe in global warming. Round your lower bound and upper b ...

1 suppose that a company selects two people who work

1. Suppose that a company selects two people who work independently inspecting two-by-four timbers. Their job is to identify low-quality timbers. Suppose that the probability that an inspector does not identify a low-qua ...

From a sample of 35 presidential elections - 19 of those

From a sample of 35 presidential elections - 19 of those have been Republican (R) victories - and 16 have been Democrat (D) victories. I need to know how to construction a 95% confidence interval about the proportion o ...

On average the parts from a supplier have a mean of 975

On average, the parts from a supplier have a mean of 97.5 inches and a standard deviation of 12.2 inches. Find the probability that a randomly selected part from this supplier will have a value between 85.3 and 109.7 inc ...

On the production line the company finds that 997 of

On the production line the company finds that 99.7% of products are made correctly. You are responsible for quality control and take batches of 30 products from the line and test them. What number of the 30 being incorre ...

Over the past 100 years the level of government regulation

Over the past 100 years, the level of government regulation of financial institutions and markets has ebbed and flowed or, as some economists might argue, has ebbed and flooded. Although the laws and regulatory agencies ...

If an urn1 contains 6purle balls and 4red balls and urn2

If an Urn1 contains 6purle balls and 4red balls. And Urn2 contains 4purple balls and 6 red balls. Urn3 contains 4purple balls and 5red balls. If one of the urns is selected at random and a ball is drawn, what is the prob ...

A factory makes parts for laptop computers including screws

A factory makes parts for laptop computers, including screws. The screws are required to have the right length. The lengths of the screws obey a normal distribution with mean μ=4.25 millimeters and standard deviation σ=0 ...

Size of accounts receivable lo1 the arizona bay corporation

Size of Accounts Receivable [LO1] The Arizona Bay Corporation sells on credit terms of net 30. Its accounts are, on average, four days past due. If annual credit sales are $9.75 million, what is the company's balance she ...

Assume that the class consists of 45 percent freshmen 20

Assume that the class consists of 45 percent freshmen, 20 percent sophomores, 20 percent juniors, and 15 percent seniors. Assume further that 50 percent of the freshmen, 50 percent of the sophomores, 25 percent of the ju ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert