that changes move in a favourable direction

EV (Earned Value) the budgeted value of work actually completed
i.e. the amount of money that should be invested in the completed work up to a certain point.ETC (Estimated cost of remaining work) ETC = total PV - EV completed or ETC = PV of remaining work x CPI2) Most common yardsticks: CV (Cost deviation): CV = EV - ACCV>0 (Cost saving) CV<0 (Cost overrun) SV (Schedule deviation). SV=EV-PVSV>0 (over schedule) SV<0 (behind schedule)