19 lines
612 B
C++
19 lines
612 B
C++
|
#include "dispersion.h"
|
||
|
|
|
||
|
|
BEGIN_NAMESPACE(BusinessLogic)
|
||
|
|
BEGIN_NAMESPACE(Statistics)
|
||
|
|
|
||
|
|
long double Dispersion::operator()(const container_type &container, size_t size) const {
|
||
|
|
long double average = 0;
|
||
|
|
long double averageOfSquares = 0;
|
||
|
|
|
||
|
|
for(size_t i = 0; i < size; ++i) {
|
||
|
|
average += ( container[i] ) / static_cast<long double>(size);
|
||
|
|
averageOfSquares += ( container[i] ) * ( container[i] ) / static_cast<long double>(size);
|
||
|
|
}
|
||
|
|
return averageOfSquares - average * average;
|
||
|
|
}
|
||
|
|
|
||
|
|
END_NAMESPACE // Statistics
|
||
|
|
END_NAMESPACE // BusinessLogic
|