A multiplicative forecast model can provide a seasonal index having all index values less than 100.

True

False

A time series prediction error measure based on the absolute value of deviations is the

MAD

MSE

correction factor

standard deviation

A moving average is applied to a time series of data to

highlight the effect of seasonality

remove the effect of seasonality and cycles

remove the trend from the series

identify the time series period

A moving average model will not yield a trend value for every period.

True

False

At a specific time period, the value of trend multiplied by the adjusted seasonal factor equals the

forecast error

seasonal index

forecast value

actual time series value