A mutual fund is a professionally managed investment scheme that pools money from many investors and invests in a variety of securities. Growth funds focus primarily on increasing the value of investments, whereas blended funds seek a balance between current income and growth. Here is data on the expense ratio (expenses as a % of assets, from www.morningstar.com) for samples of 20 large-cap balanced funds and 20 large-cap growth funds (“large-cap” refers to the sizes of companies in which the funds invest; the population sizes are 825 and 762, respectively): a?? alculate and compare the values of and ?s ? or the two types of funds. b?. ?Construct a comparative boxplot for the two types of funds, and comment on interesting features.
Answer Step 1 of 4 a) From Sample values of BI Mean=X /n=22.41/20=1.1205 n+1 th Median=( 2 ) value =( 20+1 ) value 2 th =10.5 value=1.05 Find SD value in MS-Excel 2 (xx) SD= n =0.491 Step 2 of 4 From Sample values of Gr Mean=X /n=24.87/20=1.2435 Median= ( n+1 ) value 2 =( 20+1 ) value 2 =10.5 value=1.15 Find SD value in MS-Excel 2 (xx) SD n =0.396