my ref only ... 10.2 q 3 6 question Use Ti83 calculator pl Referto the Table of
ID: 3219291 • Letter: M
Question
my ref only ... 10.2 q 3
6 question Use Ti83 calculator pl
Referto the Table of Critical Values
Refer to the accompanying scatterplot.
a. Examine the pattern of all 10 points and subjectively determine whether there appears to be a strong correlation between x and y. b. Find the value of the correlation coefficient r and determine whether there is a linear correlation. c. Remove the point with coordinates (2,9)and find the correlation coefficient r and determine whether there is a linear correlation. d. What do you conclude about the possible effect from a single pair of values?
1.. Do the data points appear to have a strong linear correlation? A. Yes//No
2.. What is the value of the correlation coefficient for all 10 data points?
A. r=(Simplify your answer. Round to three decimal places as needed.)
3.Is there a linear correlation between x and y? Use =0.01.
A. Yes,because the correlation coefficient isnot in the critical region.
B.No,because the correlation coefficient is in the critical region.
C.Yes,because the correlation coefficient is in the critical region
D.No,because the correlation coefficient is not in the critical region.
4.. What is the correlation coefficient when the point (2,9)is excluded?
A. r=________(Round to three decimal places as needed.)
5. Is there a linear correlation between x and y? Use =0.01.
A.Yes,because the correlation coefficient is not in the critical region.
B.Yes,because the correlation coefficient is in the critical region.
C.No,because the correlation coefficient is not in the critical region.
D.No,because the correlation coefficient is in the critical region.
6.. What do you conclude about the possible effect from a single pair of values?
A.The effect from a single pair of values can change the conclusion.
B.A single pair of values does not change the con
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010010xy .. (0,0)
A scatterplot has a horizontal x-scale from 0 to 10 in increments of 1 and vertical y-scale from 0 to 10 in increments of 1.
Ten points are plotted with nine points (8, 3), (9, 3), (10, 3), (8, 2), (9, 2), (10, 2), (8, 1), (9, 1), and (10, 1) forming a square and the tenth point (2, 9) above and to the left of it.
To test Ho: p= O against H1: p+w/line through O
Reject Ho if the absolute value of r is greater than the critical value in the table
Explanation / Answer
The result is obtained by excel
1. Yes, data points appear to have a strong linear correlation.
2. the value of the correlation coefficient for all 10 data points is 0.88024
3. Yes,because the correlation coefficient is in the critical region
4. the correlation coefficient when the point (2,9)is excluded is 0
5. No,because the correlation coefficient is not in the critical region
6. The effect from a single pair of values can change the conclusion
SUMMARY OUTPUT Regression Statistics Multiple R 0.88024 R Square 0.774822 Adjusted R Square 0.746674 Standard Error 1.18751 Observations 10 ANOVA df SS MS F Significance F Regression 1 38.81856 38.81856 27.52739 0.000777 Residual 8 11.28144 1.41018 Total 9 50.1 Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Intercept 10.67665 0.588398 18.14529 8.74E-08 9.319799 12.03349 X Variable 1 -0.88024 0.167772 -5.24665 0.000777 -1.26712 -0.49336Related Questions
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