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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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