Complete the following objectives for each data set:(a) Draw a scatter plot(b) Estimate the correlation in words (positive, negative, or no correlation)(c) Calculate the correlation coefficient, r.(d) Determine whether r is statistically significant at the 0.01 level of significance.(e) Determine whether r is statistically significant at the 0.05 level of significance.(f) Calculate the coefficient of determination, r2.(g) Interpret the meaning of r2 for the given set of data. (f) Find the equation of the least-squares regression line, if appropriate. The following table contains data from 16 former elementary statistics students, where x represents the number of absences a student had for the semester and y represents the student’s final class average. Absences Class Average 2 86 2 83 3 81 10 53 3 92 7 71 9 68 1 79 12 53 9 78 1 77 1 85 13 62 1 97 10 54 3 79
Complete the following objectives for each data set:(a) Draw a scatter plot(b) Estimate the correlation in words (positive, negative, or no correlation)(c) Calculate the correlation coefficient, r.(d) Determine whether r is statistically significant at the 0.01 level of significance.(e) Determine whether r is statistically significant at the 0.05 level of significance.(f) Calculate the coefficient of determination, r2.(g) Interpret the meaning of r2 for the given set of data. (f) Find the equation of the least-squares regression line, if appropriate. The following table contains data from 16 former elementary statistics students, where x represents the number of absences a student had for the semester and y represents the student’s final class average. Absences Class Average 2 86 2 83 3 81 10 53 3 92 7 71 9 68 1 79 12 53 9 78 1 77 1 85 13 62 1 97 10 54 3 79
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
Complete the following objectives for each data set:
(a) Draw a
(b) Estimate the
(c) Calculate the
(d) Determine whether r is statistically significant at the 0.01 level of significance.
(e) Determine whether r is statistically significant at the 0.05 level of significance.
(f) Calculate the coefficient of determination, r2.
(g) Interpret the meaning of r2 for the given set of data.
(f) Find the equation of the least-squares regression line, if appropriate.
- The following table contains data from 16 former elementary statistics students, where x represents the number of absences a student had for the semester and y represents the student’s final class average.
Absences |
Class Average |
2 |
86 |
2 |
83 |
3 |
81 |
10 |
53 |
3 |
92 |
7 |
71 |
9 |
68 |
1 |
79 |
12 |
53 |
9 |
78 |
1 |
77 |
1 |
85 |
13 |
62 |
1 |
97 |
10 |
54 |
3 |
79 |
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