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Taking 13 years as assumed mean, find the mean from the following distribution table.

Number of friends 6 12 19 10 15 29 26 23 17 11 8 6 5
Age (in years) 8 9 10 11 12 13 14 15 16 17 18 19 20

Important Questions on Measures of Central Tendency

EASY
Find the average of the first ten natural number.
EASY

For the given data:

Class Frequency
160-170 20
170-180 110
180-190 130
190-200 80
200-210 60

The median is _____.

MEDIUM

In a class of 40 students, marks obtained by the students in a class test (out of 10) are given below:

Marks 1 2 3 4 5 6 7 8 9 10
Number of students 1 2 3 3 6 10 5 4 3 3

Calculate the Median for the given distribution.

EASY
m is the mean of 10 observations. If one observation 'n' is removed, then the new mean is _____
EASY
Find the difference of mean and Median value of 5,8,2,6,9,15,12,18 of the number?
EASY

Find the median of the following data:

45, 41, 43, 38, 40, 42, 44

EASY
The median of the given data 12,27,34,13,58 is:
EASY

The mean of the data x1, x2, x3  x10 is 20 then the mean of x1+ 4, x2+ 4, x3+ 4, . x10+ 4 will be 

EASY

What is the median of the following list of numbers?

5, 3, 6, 9, 11, 19 and 1

EASY

What is the mode of the given data?

4, 3, 7, 13, 16, 23, 3, 4, 7, 4, 3, 3, 9, 6, 9, 6

EASY
If the mean of the numbers 6, 7, x, 8, y, 16 is 9 then:
EASY

The following is the price of Cabbage over 12 months. What is the median price?

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MEDIUM

Find the mean of distribution if its median and mode are 45 & 13 respectively.

EASY
Find the median of the scores 7, 10, 5, 8, 9.
MEDIUM

The mean of a frequency distribution is 8.1 if fixi=132+5k and fi=20 then what is the value of k?

EASY

The variables x1, x2, .. x100 are in ascending order of their magnitude, then the median of the variables is then the median of the variables is (xk+x51+1)2. then the value of k is _____.

MEDIUM
Find the median of the numbers 1, 2, 3, 5, 8, 6, 9,11 and 4.
EASY
The median of the first seven prime numbers, is ______.
EASY
The scores obtained by a team in kabaddi series is as follows: 
17,2,7,27,15,5,14,8,10,24,48,10,8,7,18,28. Find the mean score obtained by the team? 
MEDIUM

The mean and median of  7, 5, 5, 2, 7, 6, 5, 3, 7, 6 is-

1. 5.3 and $5$

2. 5 and $5.5$

3. 5 and $6$

4. 5.3 and $5.5$