Final Fit
Now, plot the data to see how well your new model appears to fit the
data. Remember to use the easyplot command:
easyplot 0.5 10.0
Screen capture of the POW plot window showing the results of the
fitting the revised model with a notch for the absorption line.
Answer these questions about your current model and plot:
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Note the chi-squared for this fit.
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How has the chi-squared changed since your first model? Does
this change indicate that the fit is better or worse?
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How has the chi-squared changed since you added the notch? Does
this change indicate that the fit is better or worse?
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Looking at your plot, how well does the model match the data?
How has the fit of the model to the data changed since your
first plot?
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Zooming in on 6.0 to 8.0 on the x-axis (easyplot 6.0 8.0), does the model fit the
absorption line better than before?
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Do you think that you have found the best model for these data?
Why or why not?
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If not, then describe what features of the data the model seems
to be missing.
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