HW 4 data (Prob 3.7, broker - stats %26 Q%26A)

HW 4 data (Prob 3.7, broker - stats %26 Q%26A) -...

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35235b94f308fd9d0fb55b990d981d8dc34ad674.xls Data Broker Accutrade 30.00 29.95 Ameritrade 24.99 10.99 Banc of America 54.00 24.95 Brown & Co. 17.00 5.00 Charles Schwab 55.00 29.95 CyberTrader 12.95 9.95 E*Trade Securities 49.95 14.95 First Discount 35.00 19.75 Freedom Investments 25.00 15.00 Harrisdirect 40.00 20.00 Investors National 39.00 62.50 MB Trading 9.95 10.55 Merrill Lynch Direct 50.00 29.95 Muriel Siebert 45.00 14.95 NetVest 24.00 14.00 Recom Securities 35.00 12.95 Scottrade 17.00 7.00 Sloan Securities 39.95 19.95 Strong Investments 55.00 24.95 TD Waterhouse 45.00 17.95 T. Rowe Price 50.00 19.95 Vanguard 48.00 20.00 Wall Street Discount 29.95 19.95 York Securities 40.00 36.00 Broker-assisted 100 Shares at $50/Share Online 500 Shares at $50/Share A B C 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
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35235b94f308fd9d0fb55b990d981d8dc34ad674.xls statistics stat ranked x ranked y 30.00 9.95 29.95 5.00 24.99 12.95 10.99 7.00 54.00 17.00 24.95 9.95 17.00 17.00 5.00 10.55 55.00 24.00 29.95 10.99 12.95 24.99 25.00 9.95 12.95 13.48 49.95 25.00 14.95 14.00 35.00 29.95 19.75 14.95 25.00 30.00 15.00 14.95 40.00 35.00 20.00 15.00 39.00 35.00 62.50 17.95 9.95 39.00 39.48 10.55 19.75 19.85 50.00 39.95 29.95 19.95 45.00 40.00 14.95 19.95 24.00 40.00 14.00 19.95 35.00 45.00 12.95 20.00 17.00 45.00 7.00 20.00 39.95 48.00 48.98 19.95 24.95 24.95 55.00 49.95 24.95 24.95 45.00 50.00 17.95 29.95 50.00 50.00 19.95 29.95 48.00 54.00 20.00 29.95 29.95 55.00 19.95 36.00 40.00 55.00 36.00 62.50 sum 871.74 871.74 491.14 491.14 count 24 24 24 24 mean 36.32 36.32 20.46 20.46 median 39.48 39.48 19.85 19.85 mode min 9.95 9.95 5.00 5.00 max 55.00 55.00 62.50 62.50 range R 45.05 45.05 57.50 57.50 Q1 25.00 13.48 Q3 48.98 24.95 IQR 23.98 11.47 Broker trades, x ($) Online trades, y ($) A B C D E F G 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
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35235b94f308fd9d0fb55b990d981d8dc34ad674.xls statistics IQR/R 0.532 ~ 0.5 0.199 < 0.5 s^2 190.67 140.63 s 13.81 11.86 CV 0.38 > 0.05 0.58 > 0.05 MoE 5.64 4.84 xbar+MoE 41.96 25.31 xbar-MoE 30.69 15.62 3s 41.43 35.58 xbar+3s 77.75 56.04 xbar-3s -5.10 = 0 -15.11 = 0 A B C D E F G 44 45 46 47 48 49 50 51 52 53 54 55 56
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35235b94f308fd9d0fb55b990d981d8dc34ad674.xls statistics = Q1 = median = Q3 H 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
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35235b94f308fd9d0fb55b990d981d8dc34ad674.xls statistics H 44 45 46 47 48 49 50 51 52 53 54 55 56
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35235b94f308fd9d0fb55b990d981d8dc34ad674.xls problem Q & A a,b. Done. c. Comparing the measures of central location, we conclude that it costs more to trade 100 shares in a broker assisted trade than 500 shares online. d. From the data we have here tranaction cost is more related to whether the trade is broker-assisted or online. The amount of the online transaction is 5 times as great ($25000 vs. $5000 for broker-assisted) but the cost of the transaction is less (on average, $20.46 vs. $36.32 for broker-assisted). (However, if the comparison was restricted to broker-assisted or online trades, we would probably find that larger transactions cost more.)
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35235b94f308fd9d0fb55b990d981d8dc34ad674.xls additional Q & A Questions and answers 1 Of the sampled data, what value is expected?
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This note was uploaded on 02/19/2011 for the course OM 210 taught by Professor Singer during the Spring '08 term at George Mason.

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HW 4 data (Prob 3.7, broker - stats %26 Q%26A) -...

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