An analysis apparatus arranged to analyse data and detect change and related methods

摘要

A method of analysing data comprising collecting at least one new data sample and using the new data sample and an existing ongoing weighted average based upon at least one earlier data sample to calculate new ongoing weighted average such that a respective weight applied to the at least one earlier data sample used to calculate the existing ongoing weighted average is diminished without needing the value of the at least one earlier data sample to calculate the new ongoing weighted average. A ongoing weighted standard deviation may be used. The method may be used to determine whether a new data sample differs by more than an acceptable amount from earlier data samples.