8. Suppose that a researcher wishes to test for calendar (seasonal) effects using a
dummy variables approach. Which of the following regressions could be used to
examine this?
(i) A regression containing intercept dummies
(ii) A regression containing slope dummies
(iii) A regression containing intercept and slope dummies
(iv) A regression containing a dummy variable taking the value 1 for one
observation and zero for all others
9. If a series possesses the “Markov property”, what would this imply?
(i) The series is path-dependent
(ii) All that is required to produce forecasts for the series is the current value of
the series plus a transition probability matrix
(iii) The state-determining variable must be observable
(iv) The series can be classified as to whether it is in one regime or another regime,
but it can only be in one regime at any one time