Problem 2:
The correlation is -0.995. The following R-commands are used.
> x=c(4,6,13,10,8,7,9,11,12,5)
> y=c(20,15,3,8,12,13,10,5,4,17)
> cor(x,y)
[1] -0.994911
..........................
Problem 3:
R output:
> x=c(22,29,24,24,28,28,25,36)
> sd(x)
[1] 4.375255
So the sample standard deviation (with (n-1) in the denominator of its definition) is 4.37. So I think the correct choice should be option (E), none of the above
Problem # 2 (18 pts). Calculate the correlation coefficient, r, for the data below. 6 8...
Question 5 Provide an appropriate response. Calculate the correlation coefficient, r, for the data below. 10 7 -16 -11 -14 -15 y -0.885 -0.778 -0.995 -0.671 Moving to the next question prevents changes to this answer.
pts Compute the linear correlation coefficient between the two variables and determine whether a linear relationship exists. х 1 8 -1 18 5 2 y 13 1 3 10 4 8 11 6 3 0 15 2 Or=-0.995; linear relation exists O r=-0.885; no linear relation exists O r=-0.995; no linear relationship exists O r=-0.885; linear relation exists Question 30 4 pts The table lists the drinking habits of a group of college students. If a student is chosen at...
12.3 Correlation Coefficient Calculation Based on the data shown below, calculate the correlation coefficient r (to three decimal places) 5 24 6 17 7 18 8 15 9 10 10 9 Get help: Read Points possible: 1 This is attempt 1 of 3. Message instructor about this question
12.3 Correlation Coefficient Calculation Based on the data shown below, calculate the correlation coefficient r (to three decimal places) 3 14 4 17 5 19 6 23 7 24 8 31 Get help: Read Points possible: 1 This is attempt 1 of 3. Message instructor about this question
Based on the data shown below, calculate the correlation coefficient (rounded to three decimal places)xy543.98640.07735.76836.25931.641027.131127.521224.511318.3
Based on the data shown below, calculate the correlation coefficient (to three decimal places) x y 4 23.14 5 21.07 6 19.1 7 18.33 8 19.86 9 18.49 10 18.42 11 19.45 12 19.28 13 18.61 14 16.34 15 15.97 16 15.4
Based on the data shown below, calculate the correlation coefficient (to three decimal places) х 4 5 6 7 8 9 10 y 19.86 19.05 22.54 21.73 21.82 25.11 26.2 28.39 26.48 27.37 31.56 32.35 31.64 31.83 11 12 13 14 15 16 17
Q. 34 Part A. Using the dataset below, calculate the covariance and correlation coefficient between X and Y. For ease, copy and paste the dataset onto your spreadsheet. X Y 21 35 24 27 23 31 30 38 22 36 18 40 20 37 26 28 a.) Covariance = 5.71. Correlation coefficient = -0.32 b.) Covariance = -5. Correlation coefficient = -0.32 c.) Covariance = -5.71. Correlation coefficient = -0.32 d.) None of the above Part B. Refer to the...
Based on the data shown below, calculate the correlation coefficient (to three decimal places) x y 5 13.95 6 15.44 7 17.93 8 17.12 9 16.91 10 18.7 11 20.09 12 18.68 13 21.27 14 20.26 15 21.35 16 20.74 17 23.23 18 23.62 19 20.71
Determine the value of the coefficient of correlation, r, for the following data. X 4 6 7 11 16 17 21 Y 18 13 13 8 7 7 5 (Round the intermediate values to 3 decimal places. Round your answer to 3 decimal places.) r= ?