Average propensity to save (APS) is measured by :

$APS=\frac{ΔC}{ΔY}$ $APS=1-C$ $APS=\frac{S}{Y}$ $APS=\frac{C}{Y}$

$APS=\frac{S}{Y}$

The correct answer is option (3) : $APS=\frac{S}{Y}$ APS is calculated by dividing total savings by income level. The correct formula for average Propensity to Save (APS) is : $APS=\frac{S}{Y}$