Statistical inference
This is the process of drawing conclusions about attributes of a population based upon information contained in a sample or taken from the population.
This is divided into estimation of parameters and testing of hypothesis. Symbols for statistic of population parameters are as given below:
|
|
Sample Statistic
|
Population Parameter
|
|
Arithmetic mean
|
x¯
|
µ
|
|
Standard deviation
|
s
|
σ
|
|
Number of items
|
n
|
N
|