Patent ID: 7505868

Claim:
A method of performing data quality assurance, comprising: receiving data values from a data source at discrete time points up to and including time point t; computing at least one estimated value based on at least some of the received data values; applying the received data values and the at least one estimated value to one of a first algorithm and a second algorithm for detecting changes in the data values, wherein the at least one estimated data value comprises predicted data values for the first algorithm, and the at least one estimated data value comprises a mean of the at least some received data values for the second algorithm, wherein the first algorithm computes cumulative sums based on the received data values and predicted data values, and the second algorithm computes a probability distribution function based on the received data values and the mean; performing a data quality determination of the data value for time point t based on one of the first and second algorithms; and providing an indication of the data quality determination for output by an output device.