In: Finance
In the APT model, what is the nonsystematic standard deviation of an equally-weighted, well diversified portfolio of 170 securities that has an average value (across securities) of nonsystematic standard deviation, σ(ei), equal to 22%? (Round your answer to 2 decimal places.)
Given that,
diversified portfolio of (n) = 170
standard deviation, σ(ei)= 22%
Here,
non systematic standard deviation is (ep)
2(ep) =(1/n)* 2(ei)
=(1/170)*222
=(0.00588)*(484)
2(ep) =2.84
(ep) =2.84
(ep) = 1.68%
non systematic standard deviation is (ep) =1.68%