Mean

Mean:



Mean:

Introduction:

Mean, median and mode are more common terms in statistics.

The average or mean is calculated by arranging the values from the set in a particular way and computing a single number as being the average of the set.

The median of a list of number can be arranging all the values from lowest value to highest value and select the middle one.

Mode is also a compute of central tendency. In a set of individual observations, the value occurs most time is called as mode.

In general Arithmetic mean (A.M) or average of n number of data x1, x2, …, xn is defined to be the number x such that the sum of the deviations of the observations from x is 0. That is, the arithmetic mean x of n observations x1, x2, …, xn is given by the equation

(x1 − x) +(x2 − x) + ... +(xn − x) = 0

Hence [barx] = x1+x2+x3+…….xn / n

Mean or average= sum of elements / total number of elements

Example: To find the mean or average of 7, 5, 6

Step 1: Find the sum of numbers

7+5+6= 18

Step 2: Calculate the total value. Therefore 3 values

Step 3: Calculate mean use formula 18/3=6

Answer: 6

Hope you like the above example of Mean.Please leave your comments, if you have any doubts.