Mean and median in Maths

Hello friends today we are going to learn some topics of Statistics included in Grade V of Karnataka state board. To understand about statistics we have to learn about two important terms which are Mean and median. Mean, Median the two kinds of most common averages and are used very commonly in Statistics.
Definition of Mean: Mean means average where addition of all numbers is done and then we divide it by total amount of the numbers .
Example1:
Find the Mean: 13, 52, 2, 13
sum is: 80
Divide 80 by 4: 20
'Mean'  = 20
Definition of Median: It is the middle value from the list of the numbers arranged in the numerical order. After arranging list into increasing order we have to check the numbers of the list, if it is odd the median is the middle number in the list .If Total of list is even then median is equal to sum of the middle two numbers divided by two
Examples for calculating Median
Example 1:8, 2, 43, 16, 14 (Odd Numbers)
Line up numbers in increasing Order: 2, 8, 14, 16, 43
Median : 14 (The number in the middle)
Example 2:
Find  Median : 8, 2, 43, 16, 14, 6 (Even amount of numbers)
Line up : 2,6,8,14,16,43(Increasing Order)
Add the 2 middle numbers and divide by 2:- 14, 8=(14+8)/2=22/2=11
The Median is 11.
Solved Problem:
Find the mean, median of the following numbers:
12, 17, 12, 13, 12, 15, 13, 20, 14
Mean =(12 + 17 + 12 + 13 + 12 + 15 + 13 + 20 + 14) ÷ 9 = 14.2
Median=12, 12, 12, 13, 13, 14, 15, 17, 20 = 13
Hope you understood about Mean and Median with the help of Explained Examples.

In next post we will talk on Possible outcomes and making predictions. For more information on Poisson Distribution, you can visit our website