signal to noise ratio Alejandra Gonzalez-Beltran Orlaith Burke Philippe Rocca-Serra S/N SNR adapted from Wikipedia: http://en.wikipedia.org/wiki/Signal-to-noise_ratio#Alternative_definition last accessed: 2013-10-18 http://docs.scipy.org/doc/scipy/reference/generated/scipy.stats.signaltonoise.html#scipy.stats.signaltonoise signal to noise ratio is a measurement datum comparing the amount of meaningful, useful or interesting data (the signal) to the amount of irrelevant or false data (the noise). Depending on the field and domain of application, different variables will be used to determinate a 'signal to noise ratio'. In statistics, the definition of signal to noise ratio is the ratio of the mean of a measurement to its standard deviation. It thus corresponds to the inverse of the coefficient of variation ratio ready for release