Repeat this forecast using different values of alpha. Try, for example, $0\mathrm{.}1,0\mathrm{.}5$ and $0\mathrm{.}9.$ Look at how the forecast behaves with each new value of alpha. What can you conclude from this?

a$.$ In the case of this calculator model, we must carefully select the value of alpha if we want to get the right forecast.

b$.$ In the case of this calculator model, we don$$t really need to pick an alpha value at all, since it plays no role in the forecast.

c$.$ In the case of this calculator model, the forecast does not seem to be very sensitive to the value of alpha.

d$.$ A smoothing average model seems to be the wrong choice for preparing a forecast for this model.