Data Transformation

Apply and compare transformations to normalise non-normal data before capability analysis or regression.

Input & Transform

Data (positive values required for log/sqrt)

Transformation

None (Original)

No transformation

Natural Log (ln)

For right-skewed, positive data

Square Root

For count data or mild skew

Reciprocal (1/x)

For rates and ratios

Box-Cox

General power transformation

Original DataNormal

W = 0.9814, p = 1.0000

Transformed DataNormal

W = 0.9814, p = 1.0000

Normality Comparison