For the exercises in this chapter we will be looking at the determinants of travel by car in the UK,

For the exercises in this chapter we will be looking at the
determinants of travel by car in the UK, which has obviously been increasing
steadily and causes concern because of issues such as pollution and congestion.
Data for these exercises are as follows:

(a) Draw time-series graphs of car travel and its price and
comment on the main features.

(b) Draw XY plots of car travel against (i) price and (ii)
income. Comment upon the major features of the graphs.

(c) In a multiple regression of car travel on its price and
on income, what would you expect the signs of the two slope
»

For the exercises in this chapter we will be looking at the
determinants of travel by car in the UK, which has obviously been increasing
steadily and causes concern because of issues such as pollution and congestion.
Data for these exercises are as follows:

(a) Draw time-series graphs of car travel and its price and
comment on the main features.

(b) Draw XY plots of car travel against (i) price and (ii)
income. Comment upon the major features of the graphs.

(c) In a multiple regression of car travel on its price and
on income, what would you expect the signs of the two slope coefficients to be?
Explain your answer.

(d) If the prices of bus and rail travel are added as
further explanatory variables, what would you expect the signs on their
coefficients to be? Justify your answer

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