1.if the cumulative error is positive, with a large majority of the forecast errors also positive, it indicates that the forecast may be biased high. (True or False)

2.A trend pattern is a gradual, long-term, up-or-down movement of demand. (true or false)

3.Forecasts with shorter-period moving averages react more quickly to recent demand changes than do longer-period moving averages. (True or False)

4.Adjusted exponentail smoothing is an exponential smoothing forecast adjusted for seasonality. (true or false)