User Account

All Pages

Compute the correlation coefficient

Assignment Help Basic Statistics
Reference no: EM131082727

For each of the four sets of data given below (Anscombe.1973), plot y verses x. The data are given in the file Anscombe. Fit a straight line to each of the data sets giving least squares estimates, ANOVA table, and R squared. Compute the correlation coefficient between y and x for each data set. Comment on your results. Would a linear regression of y on x be appropriate in all cases? Discuss.

Y1

X1

Y2

X2

Y3

X3

Y4

X4

8.04

10

9.14

10

7.46

10

6.58

8

6.95

8

8.14

8

6.77

8

5.76

8

7.58

13

8.74

13

12.74

13

7.71

8

8.81

9

8.77

9

7.11

9

8.84

8

8.33

11

9.26

11

7.81

11

8.47

8

9.96

14

8.1

14

8.84

14

7.04

8

7.24

6

6.13

6

6.08

6

5.25

8

4.26

4

3.1

4

5.39

4

12.5

19

10.84

12

9.13

12

8.15

12

5.56

8

4.82

7

7.26

7

6.42

7

7.91

8

5.68

5

4.74

5

5.73

5

6.89

8

Fit a straight line (regression line) to each of the data sets giving least squares estimates, ANOVA table, and R squared. Interpret the regression line.Compute the correlation coefficient between y and x for each data set. Comment on your resultsDisplay the scatter plot between y and x for each data set.Would a linear regression of y on x be appropriate in all cases? Discuss.

Reference no: EM131082727

Questions Cloud

Pearson correlation coefficient formula : When I repeat the regression but do a regression through the origin (i.e. no intercept), the correlation coefficient between x and u becomes -0.24117, and I am not sure why. I have to use the Pearson correlation coefficient formula to explain this..
Calculate the mean and standard deviation : In a third group of patients (cohort 3), actively dividing cells were generated by performing a second rapid expansion via active cell transfer. Cell doubling times for cohort 3 were {0.9, 3.3, 1.2, 1.1} days. Calculate the mean and standard devia..
Mean time between eruptions : Suppose a geyser has a mean time between eruptions of 68 minutes. Let the interval oftime between the eruptions be normally distributed with standard deviation 26minutes. (round everything to four decimal places)
Systolic blood pressure : Suppose systolic blood pressure, birth weight (oz), and age (days) are measured for 16 infants and the data are shown in the following table
Compute the correlation coefficient : Fit a straight line to each of the data sets giving least squares estimates, ANOVA table, and R squared. Compute the correlation coefficient between y and x for each data set. Comment on your results. Would a linear regression of y on x be appropr..
What was new concern that arose as women came to dominate : What was the new concern that arose as women came to dominate teaching, and the gender tables turned in the twentieth century?
Correlation coefficient pearson correlation : Which correlation coefficient Pearson's correlation or spearman rank correlation is the best describe the relationship between the two variables?
What is parenting style in which parent creates strict rules : What is the parenting style in which the parent creates strict rules for the child and the child has little or no input into determining the rules?
What do you think are the causes of problems : What would you suggest they do differently to eliminate these problems - who should be responsible for quality? What would you recommend be the specific responsibilities of each identified role

Reviews

Write a Review

Basic Statistics Questions & Answers

  A calculate the value of the correlation coefficient

the following data on sale price size and land-to-building ratio for 10 large industrial properties appeared in a

  A real estate agent has appointments with eight prospective

a real estate agent has appointments with eight prospective clients. from past experience the agent knows that the

  Noaa recently conducted a study to compare the height of

noaa recently conducted a study to compare the height of ocean waves one mile from shore to the velocity of the wind at

  In an examination of holiday spending known to be normally

in an examination of holiday spending known to be normally distributed of a sample of 16 holiday shoppers at a local

  A certain car model has a mean gas mileage of 29 miles per

a certain car model has a mean gas mileage of 29 miles per gallon mpg with a standard deviation of 5 mpg. a pizza

  What percent of garages take between hours to erect

Approximately normally distributed with a mean of 32 hours and a standard deviation of 2 hours. What percent of the garages take between 30 and 34 hours to erect?

  Scatterplot showing the amount of space

For each format, create a scatterplot showing the amount of space needed (in MB) for storage based on the length (in seconds) of the song. Comment on what you see in the scatterplots.

  Consequences of making a type one-two error

In the context of this scenario, what would be the consequences of making a Type I error?

  Weight attitude populations

The question of interest is whether mean GPA is the same or differs for different weight attitude populations. Minitab output for the study is given above. The mean square error (MSE) in this study is:

  Describe the differences between correlations and

describe the differences between correlations and regressions. can you describe situations where you would use one of

  Now suppose that the company currently has 180 units in

suppose that the demand for a companys product in weeks 1 2 and 3 are each normally distributed and the mean demand

  Compute standard normal z-score corresponding to value

Compute standard normal z-score corresponding to value of x = 23. e. Determine P(x 23). G. Determine P(16

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd