Enter each individual y value and the mean y value into the calculator to determine the Syy.

## Syy Formula

The following formula is used to calculate the Syy in a calculator.

Syy = Σ(yi - ȳ)^2

Variables:

- Syy is the sum of squares of the differences between each y value and the mean y value yi is each individual y value in the data set ȳ is the mean (average) of all y values in the data set

To calculate Syy, subtract the mean y value from each individual y value in the data set. Square each of these differences. Then, sum all of these squared differences to get Syy.