Self-Quiz Unit 6(2)

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Nov 24, 2024

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Self-Quiz Unit 6 Started on Sunday, 24 December 2023, 1:15 PM State Finished Completed on Sunday, 24 December 2023, 1:15 PM Time taken 7 secs Grade 0.00 out of 10.00 ( 0 %) Question 1 Not answered Marked out of 1.00 Flag question Question text describes the amount of variation in the response that is explained by the least 2 R squares line. Question 1Select one: True False Feedback The correct answer is 'True'. Question 2 Not answered Marked out of 1.00 Flag question Question text Correlation takes values between -1 and 1 inclusively. Question 2Select one: True False Feedback The correct answer is 'True'. Question 3 Not answered
Marked out of 1.00 Flag question Question text What are the parameters of linear regression? Question 3Answer a. b. c. d. all of the above Feedback Your answer is incorrect. The correct answer is: all of the above Question 4 Not answered Marked out of 1.00 Flag question Question text Given the best fit line below and its corresponding residual plot in the second row, identify the pattern in the residual: Question 4Answer a. no obvious pattern. b.
no pattern. c. curvature pattern. Feedback Your answer is incorrect. The correct answer is: curvature pattern. Question 5 Not answered Marked out of 1.00 Flag question Question text The “hat” is used on the response variable y because it is an estimate. Question 5Select one: True False Feedback The correct answer is 'False'. Question 6 Not answered Marked out of 1.00 Flag question Question text Given the best fit line below and its corresponding residual plot in the second row, identify how the outliers influence the least square. Question 6Answer a. slightly influential b.
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very influential c. influential Feedback Your answer is incorrect. The correct answer is: very influential Question 7 Not answered Marked out of 1.00 Flag question Question text Given the best fit line below and its corresponding residual plot in the second row, identify why the least square line fail: Question 7Answer a. linearity fails. b. presence of outliers. c. variability of errors. d. highly correlated observations. Feedback Your answer is incorrect. The correct answer is: variability of errors. Question 8 Not answered Marked out of 1.00 Flag question
Question text Given the best fit line below and its corresponding residual plot in the second row, identify why the least square line fail: Question 8Answer a. linearity fails. b. presence of outliers. c. variability of errors. d. highly correlated observations. Feedback Your answer is incorrect. The correct answer is: presence of outliers. Question 9 Not answered Marked out of 1.00 Flag question Question text The slope describes the estimated difference in the y variable if the explanatory variable x for a case happened to be one unit larger Question 9Select one: True False Feedback The correct answer is 'False'. Question 10 Not answered Marked out of 1.00 Flag question
Question text 1. is b The estimates of the parameters of a linear regression is the estimate of Question 10Select one: True False Feedback The correct answer is 'True'.
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