5>10MEANVIF⇒ THE MULTICOLLINEARITY IS FOUNDIN THE MODEL. BUT IT...
72.5>10
MeanVIF
⇒
The multicollinearity is found
in the model. But it is not
necessary to cure because of the
statistical significance
s of model.
Note: The figures in (...) are t-statistic.
IX. Conclusion
The research has shown the relationship between the six economic variables
and the quantity of car sold in US in the period of 1975 to 1990. From the analysis
results, it can see that only four variables including prime interest rate, income,
population and price has relationship with number of new cars sold. The
unemployment and number of cars on the road do not hold effect. The income has
the most impact on the number of car sold in a positive way. Together with the
price, income variable has the positive relationship with the dependent variable. In
contrast, the prime interest rate and the population has a negative relationship with
the number of car sold.
However, when applying the result into reality, we found that population
variable does has impact on the number of new cars sold but the scale impact did
not as much as the result numbers told. This could come from the drawback of our
observations. The number of observations is small, the time is restricted in fifteen
years, the origin of the observations is not clear enough. All these things could lead
to some imprecise in our research result.
According to the result, the research has reached the main purpose of its. The
research has determined the significant factors to the number of car sold in US
( 1957-1990) and measured the impact of them on the dependent variable. However,
its drawback affected the judgement of us.
Based on the result of our research, we would like to have some suggestions
on the fiscal policy to the government. The research has shown the relationship
between the macroeconomic variables to the number of new cars sold, these three
variables could be affected by the decision of government. The government can use
their fiscal tool to adjust the prime interest rate, the price to get the best profit for
car firms in the national economy. Besides, the government can intervene into the
wages to adjust the income as well.
We would like to express our deep gratitude to our beloved teachers for your
guidance and support to help us finish our research and for all the time and
enthusiasm we received during the econometrics course.
X. References