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![25) To find out correlation coefficient manually we need to find out few totals first, let variable Hours be x and variable Score be y, then calculate the totals of xy, x2and y2 xy Х2 5 10 4 6 10 64 86 69 86 59 87 451 320 860 276 516 590 783 3345 25 100 16 36 100 81 358 4096 7396 4761 7396 3481 7569 34699 Hence we have Σχ = 44, Zy = 451, ΣΧу-3345, ΣΧ2-358, Zy-34699, n = 6 The linear correlation coefficient is given by [n(2x2) - (2x)2][n(Zy2) - (Zy)2] 6 3345-44 451 6 358-44]6 34699- 4512] 20070- 19844 [2148& - 1936][208194 - 203401] 226 212 * 4793 0.2242](http://img.homeworklib.com/questions/e8b09360-75b6-11ea-a8b7-27d10ca1a656.png?x-oss-process=image/resize,w_560)
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Find the value of the linear correl ation coefficient r. 25) The paired data below consist...
17. Explain how you found the linear correlation coefficient. Find the value of the linear correlation...
17. Explain how you found the linear correlation
coefficient.
Find the value of the linear correlation coefficient r. Points: 5 17) The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test. Hours 5 10 4 6 10 9 Score 64 86 69 86 59 87 D) 0.224 C) 0.678 B) -0.678 A) -0.224 Explain how you found the linear correlation coefficient.
4:13 7 11 Exit O 2 PM Question 20 5 pts The paired data below consist...
4:13 7 11 Exit O 2 PM Question 20 5 pts The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test. Hours 5 10 4 6 10 9 Score 64 86 69 86 59 87 Find the value of the correlation coefficient r for this data. 0.224 0.678 -0.224 -0.678 Question 21 5 pts Determine which plot shows the strongest linear correlation.
14) Fill in the Blank. Find the value of the linear correlation coefficient (Round off to...
14) Fill in the Blank. Find the value of the linear correlation coefficient (Round off to three decimals). The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test. Show your work on your own paper to earn the credit. If you use a TI-83/84, just indicate which function you have selected. Hours 5 10 4 6 10 9 Score 64 86 69 86 59 87 Question...
Use the given information to complete the test to determine if there is significant linear correlation...
Use the given information to complete the test to determine if there is significant linear correlation between numbers of hours a student spent preparing for a test and test scores. Use a significance level of 0.05. 1) The test scores of 6 randomly picked students and the numbers of hours they prepared are 1) as follows: Hours 5 10 4 6 10 9 Score 64 86 69 86 59 87 The equation of the regression line is y = 1.06604x...
13) Find the value of the linear correlation coefficient r. Managers rate employees according to job...
13) Find the value of the linear correlation coefficient r. Managers rate employees according to job performance and attitude. The results for several randomly selected employees are given below. Performance 59 | 63 | 65 | 69 58 | 77 | 76 69 | 70 64 Attitude 72 67 78 82 75 87 92 83 | 87 78 A. The linear correlation coefficient r is: (rounded to 3 decimal places) B. Using the above data to find the equation of...
Show all your work as needed for full credit (20 points each). Use the given information...
Show all your work as needed for full credit (20 points each). Use the given information to complete the test to determine if there is significant linear correlation between numbers of hours a student spent preparing for a test and test scores. Use a significance level of 0.05. 1) 4 1) The test scores of 6 randomly picked students and the numbers of hours they prepared are as follows: Hours 5 10 6 10 9 Score 64 86 69 86...
Show all your work as needed for full credit (20 points each). Use the given information...
Show all your work as needed for full credit (20 points each). Use the given information to complete the test to determine if there is significant linear correlation between numbers of hours a student spent preparing for a test and test scores. Use a significance level of 0.05. 1) 4 1) The test scores of 6 randomly picked students and the numbers of hours they prepared are as follows: Hours 5 10 6 10 9 Score 64 86 69 86...
Find the value of the linear correlation coefficient A study was conducted to compare the average...
Find the value of the linear correlation coefficient A study was conducted to compare the average time spent in the lab each week versus course grade 7) for computer programming students. The results are recorded in the table below. 51 16 15 16 10 81 51 C) 0.462 A) 0017 B)-0.284 D) -0.335 8) Managers rate employees according to job performance and attitude. The results for several randomly selected employees are given below iertonnance 59 |의 65169 ↓ 5 7...
Question 10 6 pts The paired data below consist of the costs of advertising (in thousands...
Question 10 6 pts The paired data below consist of the costs of advertising (in thousands of dollars) and the number of products sold (in thousands): Cost 9 4 2 3 Number 85 68 53 55 Find the value of the linear correlation coefficient r. 0.246 0.708 0.9703 0.235
the data below are the final exam scores of 10 randomly selected statistics students and the...
the
data below are the final exam scores of 10 randomly selected
statistics students and the number of hours they studied for the
exam. What is the best predicted value for the exam score for a
student who stuided 2 hours? Assume that the varibles x and y have
a significant correlation.
Question 10 1 pts The data below are the final exam scores of 10 randomly selected statistics students and the number of hours they studied for the exam....
17. Explain how you found the linear correlation
coefficient.
Find the value of the linear correlation coefficient r. Points: 5 17) The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test. Hours 5 10 4 6 10 9 Score 64 86 69 86 59 87 D) 0.224 C) 0.678 B) -0.678 A) -0.224 Explain how you found the linear correlation coefficient.
4:13 7 11 Exit O 2 PM Question 20 5 pts The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test. Hours 5 10 4 6 10 9 Score 64 86 69 86 59 87 Find the value of the correlation coefficient r for this data. 0.224 0.678 -0.224 -0.678 Question 21 5 pts Determine which plot shows the strongest linear correlation.
14) Fill in the Blank. Find the value of the linear correlation coefficient (Round off to three decimals). The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test. Show your work on your own paper to earn the credit. If you use a TI-83/84, just indicate which function you have selected. Hours 5 10 4 6 10 9 Score 64 86 69 86 59 87 Question...
Use the given information to complete the test to determine if there is significant linear correlation between numbers of hours a student spent preparing for a test and test scores. Use a significance level of 0.05. 1) The test scores of 6 randomly picked students and the numbers of hours they prepared are 1) as follows: Hours 5 10 4 6 10 9 Score 64 86 69 86 59 87 The equation of the regression line is y = 1.06604x...
13) Find the value of the linear correlation coefficient r. Managers rate employees according to job performance and attitude. The results for several randomly selected employees are given below. Performance 59 | 63 | 65 | 69 58 | 77 | 76 69 | 70 64 Attitude 72 67 78 82 75 87 92 83 | 87 78 A. The linear correlation coefficient r is: (rounded to 3 decimal places) B. Using the above data to find the equation of...
Show all your work as needed for full credit (20 points each). Use the given information to complete the test to determine if there is significant linear correlation between numbers of hours a student spent preparing for a test and test scores. Use a significance level of 0.05. 1) 4 1) The test scores of 6 randomly picked students and the numbers of hours they prepared are as follows: Hours 5 10 6 10 9 Score 64 86 69 86...
Show all your work as needed for full credit (20 points each). Use the given information to complete the test to determine if there is significant linear correlation between numbers of hours a student spent preparing for a test and test scores. Use a significance level of 0.05. 1) 4 1) The test scores of 6 randomly picked students and the numbers of hours they prepared are as follows: Hours 5 10 6 10 9 Score 64 86 69 86...
Find the value of the linear correlation coefficient A study was conducted to compare the average time spent in the lab each week versus course grade 7) for computer programming students. The results are recorded in the table below. 51 16 15 16 10 81 51 C) 0.462 A) 0017 B)-0.284 D) -0.335 8) Managers rate employees according to job performance and attitude. The results for several randomly selected employees are given below iertonnance 59 |의 65169 ↓ 5 7...
Question 10 6 pts The paired data below consist of the costs of advertising (in thousands of dollars) and the number of products sold (in thousands): Cost 9 4 2 3 Number 85 68 53 55 Find the value of the linear correlation coefficient r. 0.246 0.708 0.9703 0.235
the
data below are the final exam scores of 10 randomly selected
statistics students and the number of hours they studied for the
exam. What is the best predicted value for the exam score for a
student who stuided 2 hours? Assume that the varibles x and y have
a significant correlation.
Question 10 1 pts The data below are the final exam scores of 10 randomly selected statistics students and the number of hours they studied for the exam....
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