when is the forecast error in year 2 the mean what does it mean with forecast error what is the difference of year 1 and year 2 what would the mean of forecast error be? what is the difference between a two year regression and a descriptive t-test what would the difference between a forecast error and the average forecast error of year two be why is forecast error lower compared to year 1 what is the difference between a forecast error and a t test why is the forecast error higher in year 2 or year 1 what is the difference between the median and the mean forecast error what is the difference between a t-test and a regression? forecaster error is lower during year two than in years two and three how to interpret forecast error when using t test when does a forecast error change what is the difference between a year and a year? why is forecast error lower than year 1 what does forecasting error mean what would the difference in forecast error between year 1 and year 2 mean what is forecast errors mean difference between average forecast error and regression