HARD
Earn 100

Number of families in a village correspondence with the number of children given below:

No of children 0 1 2 3 4 5
No of families 11 25 32 10 5 1

Find the mean number of children per family.

Important Questions on Statistics

EASY

What is the median of the given data?

41, 43, 46, 50, 85, 61, 76, 55, 58, 95.

MEDIUM

Find the range and mode of the data 17, 18, 28, 19, 16, 18, 17, 29, 18.

1. 12, 18 2. 13, 18 3. 12, 17 4. 11, 17

EASY
What is the difference between the mean and median of the given data: 4, 13, 8, 15, 9, 21, 18, 23, 35, 1?
EASY
What is the median of the numbers 29,27,32,23,18,18,32,31,28,15,35,30 ?
HARD
In a city, the total income of all people with salary below Rs. 10000 per annum is less than the total income of all people with salary above Rs. 10000 per annum. If the salaries of people in the first group increases by 5% and the salaries of people in the second group decreases by 5%, then the average income of all people
EASY
What is the median of 7, 18, 6, 9, 4, 15, 21, 14, 26?
HARD
The mean of marks Scored by 100 students was found to be 40. Later on it was discovered that a Score of 53 was misread as 83. Then the correct mean will be-
HARD
The mean of the median mode and Range of the observations 7, 6, 7, 9, 14, 9, 7, 15 is
EASY

The marks of Nine students in ascending order for a test are given below with Median as 34, the value of k is:

12, 16, k, 28, k+5, 32, 39, 47, 53

EASY

The product of mean and median of first five prime numbers is:

EASY

What is the median of the given data?

41,43,46,50,85,61,76,55,68,95

EASY
The algebraic sum of deviations of 10 observations measured from 15 is 10. The mean of the observations is
MEDIUM

The data below shows the number of wickets by each bowler and the number of bowlers who took them.

Number of Wickets per bowler Number of Bowlers
5 2
4 3
3 4
2 5
1 9

What is the median of the number of wickets?

EASY

Let x be the median of data :33, 42, 28, 49, 32, 37, 52, 57, 35, 41.

If 32 is replaced by 36 and 41 by 63, then the median of the data, so obtained is y. What is the value of x+y?

EASY
What is the median of 6, 9, 13, 8, 3, 2, 5, 7 and 11?
MEDIUM
The mean of a group of 20 consecutive natural numbers is M. What will be the percentage change in the mean when next six consecutive natural numbers are left from the group?
MEDIUM
The mean of three numbers is 10 more than the least number and 15 less than the greatest number. If the median of three numbers is 5, then the sum of squares of these number is