One student who had taken statistics before spent no time studying and got an 84
ID: 2924858 • Letter: O
Question
One student who had taken statistics before spent no time studying and got an 84 on the test. This point (0, 84) is an example of: b. (A) Outlier (B) Extrapolation (C) Influential Observation (D) Residual c. The regrssion equation for this data is y hat 54.3401+6.7526 x, where y hat is the predicted grade and x is the hours spent studying. Which of the following is the correct interpretation of the intercept of this line? A) As the grade goes up by 1, the hours spent studying is predicted to increase by 6.7526 B) C) hours As the hours spent studying goes up by 1, the grade is predicted to increase by 6.7526 points If the student does not study (studies zero hours,) the grade is predicted to be 54.3401 If the student does not study (studies zero hours,) the grade is predicted to be 6.7526 D) d. The regression equation for this data is y hat 54.3401+6.7526x, where y hat is the predicted grade and x is the hours spent studying. Which of the following is the correct interpretation of the slope of this line? E) As the grade goes up by 1, the hours spent studying is predicted to increase by 6.7526 F) As the hours spent studying goes up by 1, the grade is predicted to increase by 6.7526 G) If the student does not study (studies zero hours,) the grade is predicted to be 54.3401 hours points H) If the student does not study (studies zero hours,) the grade is predicted to be 6.7526 e. The regression equation for this data is y hat 54.3401 +6.7526 x, where y hat is the predicted grade and x is the hours spent studying. What is the predicted grade of someone who spent 4.5 hours studying? A) 27.3297 B) 61.0927 C) 84.7268 D) 88.1031Explanation / Answer
b) It is an example of influential observation so answer is C
c) the correct answer is c) since we are talking only about intercept here and not slope
d) answer is B (shown as F here)
e) put the value of x in the eqaution we get, y=54.3401+6.7526*4.5 =84.7268
answer is C
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.