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**Unformatted text preview: **Question 1 2 out of2 poinls You are given information about a straight line. Determine whether the line
slope: upward, slope: downward, or is horizontal. The equation ofthe line is}:I = -14 + 3.83:.
Selected Answer: a Slopes upward CorrectAnswer: a Slopes upward QUESﬁDI‘I 2 2 out of?! poinls Ohio in the linear correlation ooefﬁcient for the data. Round your answer to three
decimal plooes. A stud"...r was conducted to compare the number of hours spent in d'Ie computer lab on
an assignment {3:} and the grade on [he assignment {3"}; for each ofeight randomly.r
selected students in a computer class. The resulls are recorded in the table below. E
332333 1.5 31
16 4:5
1-? 51
Selectedﬁtnswer: a 41335 Correcthnswer‘. a 43.335 Question 3 2 out ef2 poinis Determine the regression equation for the data. Round the final values to three
signiﬁcant digits, if necessary. at 3 s r 15 15
y a 11 r 1.1 211
Selectedhnswer: a ;.= sewerssx Correct Answer: a 1;. = it]? + 0353:: Question 4 2 out of2 poinls Use the regression equation to predict the y-Halue corrﬂponding to the given 1o
value. Rou ncl your answer to the nearest tenth. The regression equation relaljng attitude rating‘ix} and job performance raljng {3r} for ten
randomly.r selected em ployees ofa corn pany is 'r— IL? 4 1.021: . Predict the job performance raijng for an employee whose attitude rating is 5?.
Selected Answer: a Elli] CorrectAnswer‘. a Bill] Question 5 2 out on poinls Compute the coefﬁcient of determination. Round your answer to four decimal
places. F1 regression equaljon is obtained for a set of data poims. It is found that the total sum
of so uares is 1 1?.0, the regression sum of so uares is 81.51 and the error sum of squares
is 35.5. Selectedhnswer: a 0.6955 CorrectAnswer: a 0.6955 ...

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- Spring '16
- Regression Analysis, Selectedhnswer