Your curve
your RMSE
far offwithin 15%
Tips
- d moves the whole curve up and down. It is the height where the curve crosses x = 0.
- a controls the ends. Positive a rises to the right, negative a falls. A bigger size makes the ends steeper.
- b and c bend and tilt the middle. Change one slider at a time and keep it moving in whichever direction lowers the RMSE.
- Turn on residuals to see where the curve misses most.
Automatic fit
Get your RMSE within 15% of the best possible value to unlock the computer's own fit.
Unlocked. Your curve is within 15% of the best possible fit. Now watch the computer finish the job, starting from your curve.
Step0
RMSE–
a–
b–
c–
d–
RMSE = √(sum of squared residuals ÷ (n − 4)), since four coefficients are fitted.