The impulse response function is just the cross-correlation function scaled by the ratio of the standard deviations of the input and output time series.

If |θ| < 1 the first-order moving average model is invertible.  

_____ represent the distribution channel to most consumers because of their direct contact with the ultimate consumers.

Winters’ method is a seasonal exponential smoothing technique that is suitable for a time series where the amplitude of the seasonal effect is proportional to the average level of the time series.

The Seven Countries Study investigated the associations among average saturated fat intake, average serum cholesterol levels and coronary heart disease (CHD) incidence rates in 14 cohorts of people living in seven countries.  This is an example of (a/an)

In first-order exponential smoothing with λ = 0.3 the weight given to the observation that at time period t  – 1 at the end of the current period t is 0.21.

The forecasting procedure for the IMA (1, 1) model is equivalent to first-order exponential smoothing. 

The Durbin-Watson test is a reasonable procedure to apply to cross-section regression data.

What is the optimal weight k* that would be used to form a linear combination of the two individual forecasts that minimizes the variance of forecast errors?

The supply chain begins with: