Measurement & regression
Probable error
Enter the measured values of one quantity — you get the mean, the probable error and every step.
Values changed since the last calculation. Press Calculate to update.
Step by step
Results
Final result
All quantities
X–Y data points
Enter at least 3 pairs. Rows with both fields empty are skipped.
#
xi
yi
ŷi
yi − ŷi
Values changed since the last calculation. Press Calculate Regression to update.
Step by step
Results
Slope with probable error
Graph
Experimental points
Best-fit line
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