Q. When the correlation coefficient r = ±1, the two regression lines:
✅ Correct Answer: (C)
coincide
Quantitative Methods for Economic Analysis 2 MCQs and Notes
Q. When there is perfect correlation, the value of the correlation coefficient is:
✅ Correct Answer: (C)
±1
Q. The relationship between x and y is y = 2x + 1. The correlation between x and y is:
✅ Correct Answer: (A)
1
Q. For a symmetrical distribution the coefficient of skewness is
✅ Correct Answer: (C)
+3
Q. For the open-end class frequency distribution the appropriate measure of dispersion is………….
✅ Correct Answer: (B)
quartile deviation
Q. In a normal distribution Q.D = …………..
✅ Correct Answer: (A)
sd
Q. When 5 is added to all the values of a series then standard deviation
✅ Correct Answer: (A)
does not change
Q. Meaures of dispersion which ignores the sign is……………
✅ Correct Answer: (A)
mean deviation
Q. Mean deviation is minimum when deviations are taken from
✅ Correct Answer: (B)
median
Q. The Mean is 1000 and standard deviation is 50 then coefficient of variation is
✅ Correct Answer: (B)
5