Question

Is the following data a time series? If not explain why

Number of emails sent by employees of a company each hour in a single day.

A. No because the data values are the hours in a single day, and are not points in time.

B. No because the data are for each worker, not over time.

C. Yes

The number of cases of flu reported by the CDC each week during a flu season.

A. No, because the data values are the cases per week, and are not points in time.

B. No, because the data are for each flu case, not over time.

C. Yes

Which will be smoother, a single exponential smoothing (SES) model using alpha= 0.10 or a model using alpha= 0.80?

a= 0.80

a= 0.10

Answer 1