For a group of 100 students, the mean and standard deviation of scores were found to be 30 and 5 respectively. Later on it was discovered that the scor...
A random sample of size 225 is drawn from the population of mean μ and standard deviation σ. The sample mean follows the distribution with mean 100 a...
The prices (in ₹) of different yarns (per kg) in two consecutive years are as follows.
The six decile (D6 ) of 5, 3, 2, 6, 8, 4 is:
For the cumulative distribution function
the upper quartile point is
If Z1, Z2,…Zn are n independent standard normal variates, then Σni=1 Z2i will follow:
Recession in industry is associated with the:
Two random variables X and Y are said to be independent if:
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:
