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Business Data Analysis
Tabel 1.0: data concerning the 30 fastest -- growing companies as listed on March 16, 2005, on the Fortune magazine website The remaining firms were fairly evenly distributed across the next three bands at 50%, 60%, and 70%. There is a nice short tail in the 80% to 90% bands. Only two firms performed below the median, in the 20% range. [See link for examples of many ways to construct a stem and leaf plot http://www.mrexcel.com/pc16.shtml ].
Rank
Company
EPS Growth
Revenue Growth
Total Return
InVision Technologies
eResearch Technology
New Century Financial
Central European Distribution
eBay
National Medical Health Card Sys
Countrywide Financial
Neoware Systems
Friedman Billing Ramsey Group
Bradley Pharmaceuticals
Middleby
Hovnanian Enterprises
Websense
Sanders Morris Harris Group
Career Education
American Healthways
United PanAm Financial
FTI Consulting
Jarden
Par Pharmaceutical
Capital Title Group
Advanced Neuromodulation
46%
24%
Possis Medical
76%
38%
42%
Symantec
85%
30%
59%
25
33%
32%
Chico's FAS
47%
43%
66%
Rewards Network
29%
38%
Fidelity National Financial
64%
38%
38%
NetBank
60%
-1%
Electronic Arts
32%
24%
Source: Fortune magazine website
1. Develop a stem-and-leaf display of the revenue growth percentages for the 30 fastest-growing companies and describe the shape of the distribution.
Stem
Leaf
9
13
8
1. Develop a frequency distribution and a frequency histogram of the EPS (earnings per share) growth percentage. Then describe the shape of the distribution.
Frequency Bar-Chart
This frequency distribution is positively skewed with a long tail of moderate EPS percentages for approximately two-thirds of the companies analyzed. Of the higher performing one-third of companies in this group, three clearly had superior EPS gains.
Frequency Histogram
1. Construct a percent frequency polygon of the total return percentages and then describe the shape of the distribution.
Frequency Polygon for Total Returns by Percentage Group
Equidistant grouping for total returns percentages shows how few companies were in the highest bands for earnings, and illustrates the clustering that occurred in the mid-range. The one company with a negative total returns percentage substantively skews the charting.
1. Construct cumulative frequency and cumulative frequency distributions of the EPS (earnings per share) growth percentages. Then construct a relative frequency ogive of these percentages.
Cumulative Frequency of EPS Ogive
Cummulative…
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