20 students of a class obtained following respective marks out of 100 marks in subject Mathematics:
54, 46, 24, 36, 84, 70, 16, 58, 6, 82, 44, 54, 32, 64, 8, 66, 52, 28, 16 and 30
Grouped frequency distribution table of above will be

If mean of the following distribution is 211, then what is the value of (4p – 3q)?

If x and y are upper limit of median class and lower limit of modal class, respectively in the following distribution, then what is the value of (2x + y)?

If the mode of the following distribution is $$6\frac{1}{6}$$​, then what is the value of k?

The following is the distribution of ages (in years) of children in a group:

What is the median age (in years) of children ?

The median of the observations 6, 48, 32, 3, 37 and 18 is:

A student scores the following marks in 5 subjects: 60, 75, 80, 90, 95. What is the standard deviation?

The marks scored by 10 students are given below. 13, 20, 15, 13, 19, 12, 12, 11, 13, 10 The mode of the given data is:

In the following frequency distribution

The sum of the upper limit of the modal class and the lower limit of the median class:

The median of a set of 9 distinct observations is 20.5. If each of the largest four observations of the set is increased by 2, then the median of the new set: