Partition of sums of squares

• Degrees of freedom (statistics)
• Euclidean space
• Hilbert space
• Inner-product space
• Least squares
• Mean squared error
• Orthogonal complement
• Orthogonal projection
• Orthogonality
• Orthomodular lattice
• Orthonormal basis
• Pythagorean theorem
• Squared deviations
• Standard deviation
• degrees of freedom (statistics)
• descriptive statistics
• explained sum of squares
• inferential statistics
• lack-of-fit sum of squares
• linear regression model
• residual sum of squares
• squared deviations
• statistical dispersion
• statistical variability
• total sum of squares
• variance