Lab & uncertainty
Error bars, units, dimensional analysis, fits
Error propagation
σf from ∂f/∂xᵢ
Weighted mean
Combine measurements
Significant figures
Round to sig figs
Unit converter
SI prefixes & energy
Buckingham π
Dimensional groups
χ² fit quality
χ²/ν from residuals
Linear regression
slope/intercept + σ
Poisson stats
√N counting errors
Instrument resolution
Combine σ in quad
Calibration line
y=ax+b map