Q. If bxy and byx are two regression coefficients, they have:
β
Correct Answer: (A)
Same signs
Business Statistics MCQs and Notes
Q. If r = ± 1, the two regression lines are...............................
β
Correct Answer: (A)
Coincident
Q. The point of intersection of two regression lines is..........................
β
Correct Answer: (D)
(xΜ, Σ―)
Q. If the regression line is Y on X, then the variable X is known as..........................
β
Correct Answer: (D)
All the above
Q. The rank correlation coefficient was discovered by....................................
β
Correct Answer: (B)
Spearman
Q. If all the points of a scatter diagram lie on a straight line falling from left upper corner to the right bottom corner, the correlation is called...................
β
Correct Answer: (C)
Perfect negative correlation
Q. If one of the regression coefficients is greater than unity, the other must be:
β
Correct Answer: (B)
Less than Unity
Q. Correlation analysis is a ..............................
β
Correct Answer: (D)
Both Bivariate and Multivariate analysis
Q. For a distribution of data, if the arithmetic mean> median>mode, then which of the following is true?
β
Correct Answer: (B)
The distribution is positively skewed
Q. Which of the following is true, if there is no dispersion in a data set:
β
Correct Answer: (A)
All the mathematical and positional averages are equal.