Self-Quiz Unit 7.pdf - Self-Quiz Unit 7 Started on Tuesday, 2 January 2024, 8:57 PM State - College Sidekick (2024)

Self-Quiz Unit 7 Started onTuesday, 2 January 2024, 8:57 PM StateFinished Completed onTuesday, 2 January 2024, 8:59 PM Time taken2 mins 30 secs Grade0.00out of 10.00 (0%) Question 1 Not answered Marked out of 1.00 Flag question Question text What are common strategies for adding or removing variables in a multiple regression? a. backward elimination b. forward elimination c. stepwise Question 1Answer a. a and b b. a and c c. b and c d. a, b and c Feedback Your answer is incorrect. The correct answer is: a and b Question 2 Not answered Marked out of 1.00

Flag question Question text Forward elimination is the process that starts with a model that has no predictors then add each variable one at the time until we cannot find any variables that import the adjusted .. Question 2Select one: True False Feedback The correct answer is 'True'. Question 3 Not answered Marked out of 1.00 Flag question Question text Given below is the output of a regression in JASP. What is the least square regression line? Question 3Answer a. ŷ= -12.680 + 0.038X b. ŷ= -12.421 + 0.038X c. ŷ= -12.421 + 0.448X Feedback Your answer is incorrect. The correct answer is: ŷ = -12.680 + 0.038X

Question 4 Not answered Marked out of 1.00 Flag question Question text Given below is the output of a regression in JASP. Is the estimate b1 of the parameter β1 statistically significant at 5% confidence level? Question 4Answer a. it is significant since p-value < 0.05. b. it is not significant since p-value is 0.933. c. it is significant since p-value is 0.001. Feedback Your answer is incorrect. The correct answer is: it is not significant since p-value is 0.933. Question 5 Not answered Marked out of 1.00Flag question Question text A regression is run with the response variable, the poverty percentage and the explanatory variable in the region (northeast, Midwest, west, south). Given the output below, which region is the reference level?

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