Basic understanding about the various types of Mean

1. Types of Mean
Basic understanding about the various
types of Mean

2. Types of Mean
1.Arithmetic mean (AM) :
It is the sum of the sampled values divided by the
number of items in the sample.
2.Geometric mean (GM) :
It is an average that is useful for sets of positive
numbers that are interpreted according to their
product
3.Harmonic mean (HM)
The relation betAweMen AGM,MGM aHndM HM

3. Mean Calculation
Suppose x1,x2,x3…xn is a sample then
Arithmetic mean (AM)
x x x x x
    ... 
x 
1 2 3 4
n Geometric mean (GM)
i x x
Harmonic mean (HM)
n
n
n
i
1
1
_
) (

1
n
1
_
)
1
.( 


i i x
x n

4. Mean of a function
To calculate a mean of a infinite set of values like a
function f(x),the formula is as follows
 ( )
f x dx

avg 
b a
y
b
a
Basic and interesting formulas, which are very
helpful to solve algebra homework problems.