Question
When price elasticity of demand is unity, the total
expenditure:Solution
In simple terms, if a commodity has unitary elastic demand, then no matter if the price increases or decreases, the total expenditure made on it remains unchanged. In the above example, the price elasticity of demand is equal to one because the total expenditure remains the same no matter if the price falls or rises.
The probability of getting 9 cards of the same suit in one hand at a game of bridge is
For the distribution with unknown θ

We set the tes...
For frequency distribution presentation , which option is wrong.
The curve obtained by joining the points, whose x-coordinates are the upper limits of the class interval and y-coordinates are corresponding cumulative...
The value of k so that following is probability mass function
X:           -2           -1           0  �...

The standard deviation of Y is double of standard deviation of X. The correlation coefficient between X and Y is 0.5. The acme angle between lines of r...
If Laspeyres price index of a commodity is 208 and Passche's price index of the same commodity is 52, the value of Fisher index number will be:
For making frequency distribution, the number of classes used depends upon:
The six decile (D6 ) of 5, 3, 2, 6, 8, 4 is: