问题如下:
With respect to the simulation, Maxwell should be concerned that:
选项:
A. CSI does not follow a symmetric distribution.
B. property management fees are not normally distributed.
C. there is a lack of correlation between the CSI and the management fee percentage.
解释:
A is correct. Using a normal distribution when the distribution is not normal may lead to misleading results. There is no limitation on the type of probability distribution (for example, normal or uniform); what is important is that the selected distribution reflect the likely distribution of future values. Further, there is no requirement that inputs be correlated with one another. In fact, correlated inputs present issues that must be overcome by either removing one of the probability inputs or explicitly building the correlation into the simulation.
B is incorrect because probabilistic variables may follow different distributions, including the normal distribution and the uniform distribution. It is important to pick a statistical distribution that best captures the variability in the input and estimate the parameters for that distribution.
C is incorrect because there is no requirement that inputs be correlated with one another. In fact, correlated inputs present issues that must be overcome by either removing one of the probability inputs or explicitly building the correlation into the simulation.