Income elasticity of an inferior good is always
An inferior good is one whose demand drops when people's incomes rise. So, income elasticity of an inferior good is always negative.
For the study purpose, the mean of the observations is 148 gm and standard deviation is 17.4 gm. Approximately, the coefficient of variation equals to:
If X and Y represent waiting time and service time of customers in shopping mall, have joint destiny f(x, y) = kx; 0 ≤ y ≤ x ≤ 1, then the value ...
The mean and median of the distribution is 12 and 15. Then the mode equals to:
Recession in industry is associated with the:
With which characteristic movement of a time series would you associate increasing demand of smaller automobiles?
The first four moments of a distribution about the origin are -1.5,17,-30 and 108. The third moment about the mean is:
By the method of moving averages, the seasonal index for four quarters equals to:
For an experiment we have the following data set: n = 4, ∑ X = a,∑ Y = 10,∑ XY = 21,∑ X2 = 30,∑ Y2 = 30 the correlati...
The grouped data for the observations are
Class: 1-3 3-5 5-7
If the first, second and third moment about origin are 2, 8 and 14. respectively, then Karl Pearson gamma coefficient of skewness y1 is:
