Last Update: 8/14/2018
The linear fit reports whether the fitted slope is significantly different from 0 by default. However, you may also want to compare the fitted slope with a specific value other than 0, the theoretical slope value for example. You can manually calculate it as follows:
df = the total number of points - 2
You can run the above calculation in the Script Window (Window: Script Window).
If the returned Prob < 0.05, it means the fitted Slope is significantly different from the specific value.
Minimum Origin Version Required: Origin 2019
Keywords:Linear Curve Fit, linear regression, slope, significant difference, comparison, P value