Consider the following frequency distribution:

x     f

8     6

5     4

6     5

10    8

9     9

4     6

7     4

What is the median for the distribution?

The mean of 14 observations is 11. One more observation is included and the new mean becomes 12. The 15th observation is

A boy spends Rs 20 to purchase toffees at Rs 1 each. Next day, he purchased some toffees for Rs 40 with a discount of 50 paise per toffee. What is the average price per toffee (in paise)?

Find the average of all prime numbers from 1 to 50.

Find the mean and mode of the numbers 1, 9, 5, 4, 2, 1, 9, 9, 2, 1, 9, 1, 2, 1?

The runs scored by two batsmen over 7 matches are given below. Which batsman average was better ?

What is the mean of the first five Triangular Numbers?

The average of 10 numbers is 30. If at the time of calculation one number was wrongly taken as 36 instead of 69, then what will be the correct average?

What is the average of 36, 43, 51, 68, and 77?