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Free download in PDF Correlation and Regression Multiple Choice Questions with Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
61
In scatter diagram, if most of the points lie in the first and third quadrants, then coefficient of correlation is:
[A]
Negative
[B]
Positive
[C]
Zero
[D]
All of the above
62
If one item is fixed and unchangeable and the other item varies, the correlation coefficient will be:
[A]
Positive
[B]
Negative
[C]
Zero
[D]
Undecided
63
If the points on the scatter diagram show no tendency either to increase together or decrease together the value of r will be close to:
[A]
-1
[B]
+1
[C]
0.5
[D]
0
64
A regression model may be:
[A]
Linear
[B]
Non-linear
[C]
Both (a) and (b)
[D]
Neither (a) and (b)
65
If bxy = 0.20 and rxy = 0.50, then byx is equal to:
[A]
0.20
[B]
0.25
[C]
0.50
[D]
1.25
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