You have received a year-end bonus of $5000. You decide to invest the money in the stock market and have narrowed your investment options down to two mutual funds. the following data represent the historical quarterly rates of return of each mutual fund for the past 20 quarters (5 years).
Mutual Fund A
1.3, -0.3, 0.6, 608, 5.0, 5.2, 4.8, 2.4, 3.0, 1.8, 7.3, 8.6, 3.4, 3.8, -1.3, 6.4, 1.9, -0.5, -2.3, 3.1
Mutual Fund B
-5.4, 6.7, 11.9, 4.3, 4.3, 3.5, 10.5, 2.9, 3.8, 5.9, -6.7, 1.4, 8.9, 0.3, -2.4, -4.7, -1.1, 3.4, 7.7, 12.9
Describe each data set. That is, determine the shape, center and spread. Which mutual fund would you invest in and why? Also calculate the CV for both sets of data."
I know the formula for the CV is (s/x̄)x100%, and i found x̄ to be 3.05 for A, and 3.41 for B. But i do not know how to get the s value. Also, i do not know what "center and spread" mean. Could someone help me please?
p.s. x̄ is "x-bar"
6 answers