Use the data below to answer the determine variance and standarddeviation. (note: carry your calculator out to 4 decimal places).
Year Actual Return Average Return Deviation for the Mean Squared Deviation
1 .12 .103 .017
Find the standarddeviation of the data in the given frequency table.
A company had 80 employees whose salaries are summarized in the frequency table below. Find the standarddeviation.
You own a portfolio that has 35% invested in asset A, and 65% invested in asset B. Asset A's standarddeviation is 12% and asset B's standarddeviation is 18%. The correlation coefficient between the two assets is -0.7. The expected return on the portfolio is 13%. What is the portfolio standarddeviation?