Q. Regression Coefficient of Y on X is:
β
Correct Answer: (B)
bYX
Business Statistics MCQs and Notes
Q. The regression coefficient of X on Y is:
β
Correct Answer: (A)
bXY
Q. The rank correlation coefficient of a debating contest involving 10 participants was calculated as 0.6. However, it was later discovered that the difference in the ranks of some participants was read as 8 instead of 3. Find the correct correlation coefficient:
β
Correct Answer: (A)
0.933
Q. In a bivariate distribution, Spearman’s Coefficient of Correlation is -0.25. If the sum of the squares of various ranks is 150, find out the number of pairs of items:
β
Correct Answer: (C)
9
Q. In a bivariate sample, the sum of squares of differences between marks of observed values of two variables is 33 and the rank correlation between them is 0.8. Find the number of pairs of observations:
β
Correct Answer: (B)
10
Q. If the sum of squares of the rank differences of 10 pairs of values is 30, find the correlation coefficient between them.
β
Correct Answer: (B)
0.82
Q. The value of β2 can be:
β
Correct Answer: (D)
All of the above
Q. Bowley's coefficient of skewness lies between:
β
Correct Answer: (B)
1 and +1
Q. The second and fourth moments about mean are 4 and 48 respectively, then the distribution is:
β
Correct Answer: (C)
Mesokurtic or normal
Q. For a symmetrical distribution:
β
Correct Answer: (C)
β1 = 0