# SigmaYY Command

From GeoGebra Manual

- SigmaYY( <List of Points> )
- Calculates the sum of squares of
*y*-coordinates of the given points. **Example:**Let`list = {(-3, 4), (-1, 4), (-2, 3), (1, 3), (2, 2), (1, 5)}`

be a list of points.`SigmaYY(list)`

yields*a = 79*.