Describe the following terms
a) stationary time series
b) seasonal time series
c) box test ( clearly define your notation and the null and
alternative hypotheses)
(1) What two plots might you use to check whether a given time
series is stationary? How are they used?
(2) What plot might you use to determine the order of an MA
process? What plot might you use to determine the order of an AR
process? How are they used?
(3) After fitting a time series model, what two plots might
you use to assess whether the fitted model is appropriate? How are
they used?
Which one of the following time series is most likely to be
stationary?
Select one:
Consumer price index
Financial asset returns
Life expectancy
Nominal gross domestic product
Provide a detailed explanation on why the selected option is
correct.
1) what does it mean when a cell or cells in a worksheet include
a series of # sign?
2) how do you control the appearance of data in a worksheet?
3) what does the format painter tool do?
4) explain the arguments used in the SUM function?
5) explain the importance of parentheses in formulas?
The various reasons or the forces which affect the values of an observation in a time series are the components of a time series. Explain briefly any four components of time series.