Using the data from Table 3 9 4 for the portfolio investments of CREF in aerospace and defense a Find the standard deviation of portfolio value for these firms stock in CREFs portfolio b Find the range of these portfolio values c Find the coefficient of variation d Interpret the variability based o...

a The standard deviation is 75354214 b The range is 363982 ...

Using the data from Table 3.9.4 for the portfolio investments of CREF in aerospace and defense: a.

Question:

Using the data from Table 3.9.4 for the investments of CREF in aerospace and defense:
a. Find the standard deviation of value for these firms’ stock in CREF’s Find the range of these values.
c. Find the coefficient of variation.
d. Interpret the variability based on these three summaries.
e. How many values are within one standard deviation of the average? How does this compare to what you would expect for a normal distribution?
f. How many values are within two standard deviations of the average? How does this compare to what you would expect for a normal distribution?
Portfolio
A portfolio is a grouping of financial assets such as stocks, bonds, commodities, currencies and cash equivalents, as well as their fund counterparts, including mutual, exchange-traded and closed funds. A portfolio can also consist of non-publicly...