Common Problems In Curve FittingΒΆ

Single Outlier At End Point image0

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Outliers are often caused by manual errors in recording experimental data.

Single Outlier At Mid Point image1

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Outliers are often caused by manual errors in recording experimental data.

Fitting Parallel Data image2

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This problem is often caused by environmental changes during data collection, such as temperature changes on different days when making multiple data collection runs.

Data With A Large Step image3

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This problem is often caused by environmental changes during data collection, such as a temperature change during a lunch break.

Data With A Poorly Defined Region image4

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This problem can be mitigated by taking additional data in the region that is poorly defined.

Equation Missing An Offset image5

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This illustrates the effect of fitting data with an offset to an equation that does not have one.

This problem can be caused by experimental equipment introducing bias (such as a DC offset) during data acquisition. Fitting the data to an equation with an offset will reveal the bias.

Data Scatter Over Entire Range image6

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The effect of data scatter (noise) can be reduced by increasing the total number of data points.

Fitting Random Data image7

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This illustrates the effect of fitting completely random data that has no relationship of any kind.

Based on the pyeq3 CommonProblems example at BitBucket written in Python 3.

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