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Paper: Error and Bias in the STSDAS {fitting} Package
Volume: 125, Astronomical Data Analysis Software and Systems VI
Page: 234
Authors: Busko, I. C.
Abstract: The fitting package in STSDAS (Space Telescope Science Data Analysis System) relies on two basic techniques (one linear and one non-linear) for fitting functions to data. In this work, the statistical properties of both the fitted function coefficients and their errors are examined, using a Monte Carlo approach. Results show that both methods may generate biased coefficients (at the \Simfew percent level), and over or under-estimate error bars (at the \Sim10 percent level), in particular from low signal-to-noise data.
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