Question
For discrete distribution, the co-efficient of kurtosis
β₂ is -Solution
The Pearson coefficient β2 is always greater than 1 for discrete distribution. β2 
= 3 indicates mesokurtic curve. β2< 3 and β2 > 1 then the curve will be platykurtic but it must be greater than 1 otherwise it will be straight line curve and question of skewness does not arise.
Which of the following statement is true for NRR?
The most appropriate diagram to represent data relative to monthly expenditure on different items of a family is -
If the salary of a person in the base year is Rs. 2000 per annuli and in the current year Rs. 5000. The CPI is 325, then the allowance required to maint...
Laspeyre's formula has ___________ bias and Paasche's formula has _________ bias.
Infant mortality rate is the ratio of -
Which of the following is not true for geometric mean?
Two random variables x and y have the following regression equations -
3x + 2y – 26 = 0
6x + y – 31 = 0
then, the mean values o...
A statistician collects data on production of rice from 1990 to 20 2 0 and classifies it year wise. Which of the following type of classification of da...
If Q₁, Q₂ and Q₃ are three quartiles of a frequency distribution, which of the following holds if the distribution is negatively skewed?
...The variance of first n natural numbers is -
