Samples are shown of volatility (coefficient of variation) for sector stocks over a certain period of time.

Question:

Samples are shown of volatility (coefficient of variation) for sector over a certain period of time.
(a) At Î± = .05, is there a difference in median volatility in these four portfolios? Use MegaStat, MINITAB, or a similar computer package for the calculations.
(b) Use one-factor ANOVA to compare the means. Do you reach the same conclusion?
(c) Make a histogram or other display of each sample. Would you be willing to assume normality?

Stocks
Stocks or shares are generally equity instruments that provide the largest source of raising funds in any public or private listed company's. The instruments are issued on a stock exchange from where a large number of general public who are willing...