Statistics

A modern C++ header-only library to calculate various statistics on a set of data

Build Instructions

To build and run the unit tests:

mkdir build
cd build
cmake -DBUILD_TESTS=ON ..
make -j
ctest

The library itself is a single header only. You can use the included CMake in a subdirectory and add the interface library, or just copy the statistics.h file (and license) into your project.

Usage

The Statistics object keeps incremental statistical information about a set of data. Operations work in constant time, with a fixed (and small) memory footprint.

• Use the += or insert functions to add samples to the population
• Get stats out with the following functions:
  • count() - the number of samples in the population.
  • min() - minimum valued sample in the population.
  • max() - maximum valued sample in the population.
  • mean() - average of the population.
  • sum() - the sum of all samples in the population.
  • variance() - the variance of the population.
  • standardDeviation() - the standard deviation of the population.

Example:

void main()
{
	Statistics<int> s;

	for(int i = 0; i < 10; ++i)
	{
		s += i;
	}

	std::cout << "mean = " << s.mean() << std::endl;		// prints 'mean = 4.5'
}