# Statistical Value

Average and Median
,
Standard Deviation
, maximum, mimimum and sample number are statistical values.
They are used in
Statistics
.

##
As Summary of Data

In
Data Science
, summary of the data set is useful to analyze the data.

Many softwares of statistics have the function to calculate statistical values.

If data set is big,
statistical values using
Stratified Sampling
and
Stratified Graph
could be effective analysis.

##
As Approximate Value of True Value

In
Statistics
, statistical values calculated from the data set is regarded as
"approximate value of true value" and "estmated value of true value".

NEXT Average and Median