Question: 25. Table 1.8 shows a data set containing information for 25 of the shadow stocks tracked by the American Association of Individual Investors (aaii.com, February

25. Table 1.8 shows a data set containing information for 25 of the shadow stocks tracked by the American Association of Individual Investors (aaii.com, February 2002). Shadow stocks are common stocks of smaller companies that are not closely followed by Wall Street analysts. The data set is also on the CD accompanying the text in the file named Shadow02.

a. How many variables are in the data set?

b. Which of the variables are qualitative and which are quantitative?

TABLE 1.8 DATA SET FOR 25 SHADOW STOCKS Gross Market Price/ Profit

c. For the Exchange variable, show the frequency and the percent frequency for AMEX, NYSE, and OTC. Construct a bar graph similar to Figure 1.5 for the Exchange variable.

d. Show the frequency distribution for the Gross Profit Margin using the five intervals:
0–14.9, 15–29.9, 30–44.9, 45–59.9, and 60–74.9. Construct a histogram similar to Figure 1.6.

e. What is the average price/earnings ratio?

TABLE 1.8 DATA SET FOR 25 SHADOW STOCKS Gross Market Price/ Profit Ticker Cap Earnings Margin Company Exchange Symbol ($ millions) Ratio (%) De Wolfe Companies AMEX DWL 36.4 8.4 36.7 North Coast Energy OTC NCEB 52.5 6.2 59.3 Hansen Natural Corp. OTC HANS 41.1 14.6 44.8 MarineMax, Inc. NYSE HZO 111.5 7.2 23.8 Nanometrics Incorporated OTC NANO 228.6 38.0 53.3 TeamStaff, Inc. OTC TSTF 92.1 33.5 4.1 Environmental Tectonics AMEX ETC 51.1 35.8 35.9 Measurement Specialties AMEX MSS 101.8 26.8 37.6 SEMCO Energy, Inc. NYSE SEN 193.4 18.7 23.6 Party City Corporation OTC PCTY 97.2 15.9 36.4 Embrex, Inc. OTC EMBX 136.5 18.9 59.5 Tech/Ops Sevcon, Inc. AMEX TO 23.2 20.7 35.7 ARCADIS NV OTC ARCAF 173.4 8.8 9.6 Qiao Xing Universal Tele. OTC XING 64.3 22.1 30.8 Energy West Incorporated OTC EWST 29.1 9.7 16.3 Barnwell Industries, Inc. AMEX BRN 27.3 7.4 73.4 Innodata Corporation OTC INOD 66.1 11.0 29.6 Medical Action Industries OTC MDCI 137.1 26.9 30.6 Instrumentarium Corp. OTC INMRY 240.9 3.6 52.1 Petroleum Development OTC PETD 95.9 6.1 19.4 Drexler Technology Corp. OTC DRXR 233.6 45.6 53.6 Gerber Childrenswear Inc. NYSE GCW 126.9 7.9 25.8 Gaiam, Inc. OTC GAIA 295.5 68.2 60.7 Artesian Resources Corp. OTC ARTNA 62.8 20.5 45.5 York Water Company OTC YORW 92.2 22.9 74.2

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