The table below shows standard deviations and correlation coefficients for seven stocks from different countries. Calculate the variance of a portfolio with equal investments in each stock. (Use decimals, not percents, in your calculations. Do not round intermediate calculations. Round your answer to 4 decimal places.) BHP Billiton Siemens Nestlé LVMH Toronto Dominion Bank Samsung BP Standard deviation (8) Portfolio variance ВНР Billiton Siemens 1.00 0.26 1.00 29.00 40.80 Nestlé 0.40 0.28 1.00 51.80 LVMH 0.41 0.16 0.05 1.00 27.30 Toronto Dominion Bank 0.16 0.18 0.06 0.37 1.00 21.00 Samsung 0.41 0.35 -0.02 0.55 0.14 1.00 41.50 BP 0.18 -0.08 0.06 -0.11 -0.14 -0.13 1.00 49.40

How does a nonzero constant number c change a standard deviation problem?

The amount of time a certain brand of light bulb lasts is normally distributed with a mean of 1300 hours and a standard deviation of 85 hours. What percentage light bulbs last between 1160 hours and 1240 hours, to the nearest tenth? Statistics Calculator

The trend of thinner beauty pageant winners has generated charges that the contest encourages unhealthy diet habits among young women. Listed below are body mass indexes​ (BMI) for beauty pageant winners from two different time periods.  Find the coefficient of variation for each of the two sets of​ data, then compare the variation.                       The coefficient of variation for the​ BMI's of beauty pageant winners from the 1920s and 1930s is  %