Additionally, she introduced the concept of skill, putting special attention in how the estimates of past forecast skill can provide information about the performance of forecasting systems in the future, but that the skill based on the last 30 years of hincasts is not necessarily a guarantee for the quality of real - time climate predictions due to the decadal variability of the skill. (climateurope.eu)
The bad news is that both Aaron Ramsey and Mikel Arteta are both going to out for up to a month, although even that estimate could probably be taken with a pinch of salt considering past forecasts. (justarsenal.com)
A standard statistical way to measure the accuracy of a forecast is mean squared error, a measure of how reality has differed from past forecasts. (researchaffiliates.com)