If median is 12, mean is 15 and standard deviation of data is 3 then Karl Pearson's coefficient of skewness is
Table which shows frequency of each score is called a
Value of [3(n +1)/4]th term is formula of
Monthly income of 5 persons are 3000, 5000, 4000, 2000 and 6000. Their arithmetic mean should be
For a variable X, nth positive root of product of x1, x2, x3,.... Xn is called
Middle observation in an arranged set of data is called
Nth root of product of values x1, x2, x3, ....., xn is called
If Xm is largest value and Xo is smallest value, then range ‘R’ is equal to
Reciprocal of arithmetic mean of reciprocal of values x1, x2, x3, ....., xn is known as
If a block returns to its original position after slight tilt then it is in state of
Any replacement or substitution for variable that makes statement true is called
1st quartile is also known as
Every number of housing society contributed as much as there are numbers f members in the society. The president added Rs.150 extra from to take the total of Rs. 2,650. How many members are there in the housing society
A detergent powder company is having a contest. Each pack of 1kg contains one of the letters B, A, M and O. In every 20 packs, there are four Bs, five As, ten Ms and one O. What is the probability that a pack will have a B