Calculate the simple composite index for the September price of the portfolio using February as the base period. Round the result to 2 decimal places. (Do not type a percentage sign at the end of the index number.)

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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The answer is 91.90251.

How can I get there using what formulas and calculations?

A portfolio consists of equal numbers of shares of three internet retail companies. The table below
shows the monthly closing prices (in US dollars) for the three companies' shares over a period of one
year.
Month
January
February
March
eGulf
66.72
67.92
63.91
63.53
62.32
66.00
64.61
68.55
September 71.02
October
75.42
November
67.95
December
63.60
April
May
June
July
August
Company
Warrioress
287.30
263.45
258.44
276.79
263.78
240.30
229.73
229.04
208.20
206.95
212.54
224.87
DJ.com
132.96
124.45
119.47
120.78
120.18
126.19
134.52
126.99
139.69
147.09
144.44
133.03
Calculate the simple composite index for the September price of the portfolio using February as the
base period. Round the result to 2 decimal places. (Do not type a percentage sign at the end the
index number.)
Transcribed Image Text:A portfolio consists of equal numbers of shares of three internet retail companies. The table below shows the monthly closing prices (in US dollars) for the three companies' shares over a period of one year. Month January February March eGulf 66.72 67.92 63.91 63.53 62.32 66.00 64.61 68.55 September 71.02 October 75.42 November 67.95 December 63.60 April May June July August Company Warrioress 287.30 263.45 258.44 276.79 263.78 240.30 229.73 229.04 208.20 206.95 212.54 224.87 DJ.com 132.96 124.45 119.47 120.78 120.18 126.19 134.52 126.99 139.69 147.09 144.44 133.03 Calculate the simple composite index for the September price of the portfolio using February as the base period. Round the result to 2 decimal places. (Do not type a percentage sign at the end the index number.)
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