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Sum of Squares Calculator

Statistics
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Calculates the sum of squared deviations from the mean, a key component in variance and regression analysis.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Data Point 1, Data Point 2, Data Point 3, Data Point 4, and Data Point 5 in the units shown.

Step 2

Read Sum of Data Points, Mean, Deviation 5, Deviation 4, Deviation 3, Deviation 2, Deviation 1, Squared Deviation 5, Squared Deviation 4, Squared Deviation 3, Squared Deviation 2, Squared Deviation 1, and Sum of Squares (SS) in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

Example calculations

See the inputs and their calculated results.

Preset 1: Basic

Data Point 1: 1; Data Point 2: 2; Data Point 3: 3; Data Point 4: 4; Data Point 5: 5

Sum of Data Points: 15; Mean: 3; Deviation 5: 2; Deviation 4: 1; Deviation 3: 0; Deviation 2: -1; Deviation 1: -2; Squared Deviation 5: 4; Squared Deviation 4: 1; Squared Deviation 3: 0; Squared Deviation 2: 1; Squared Deviation 1: 4; Sum of Squares (SS): 10

Preset 2: Even Spread

Data Point 1: 10; Data Point 2: 15; Data Point 3: 20; Data Point 4: 25; Data Point 5: 30

Sum of Data Points: 100; Mean: 20; Deviation 5: 10; Deviation 4: 5; Deviation 3: 0; Deviation 2: -5; Deviation 1: -10; Squared Deviation 5: 100; Squared Deviation 4: 25; Squared Deviation 3: 0; Squared Deviation 2: 25; Squared Deviation 1: 100; Sum of Squares (SS): 250

Preset 3: Clustered

Data Point 1: 5; Data Point 2: 6; Data Point 3: 7; Data Point 4: 8; Data Point 5: 9

Sum of Data Points: 35; Mean: 7; Deviation 5: 2; Deviation 4: 1; Deviation 3: 0; Deviation 2: -1; Deviation 1: -2; Squared Deviation 5: 4; Squared Deviation 4: 1; Squared Deviation 3: 0; Squared Deviation 2: 1; Squared Deviation 1: 4; Sum of Squares (SS): 10

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