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30. The top 25 companies (by market capitalization) operating in the Washington, DC, area along with the year they were founded and the number of employees are given below. Make a stem-and-leaf display of each of these variables and write a short description of your findings. Company Name Year Founded 1981 1986 1978 1995 1816 1986 1984 1909 1938 1970 Employees 30,000 AES Corp. American Capital Strategies Ltd. AvalonBay Communities Inc. Capital One Financial Corp Constellation Energy Group Inc. Coventry Health Care Inc. Danaher Corp Dominion Resources Inc. Fannie Mae Freddie Mac 484 1,767 31,800 9,736 10,250 45,000 17,500 6,450 5,533 (continued)Company Name Employees 49,675 81,000 7,200 11,246 Gannett Co General Dynamics Corp. Genworth Financial Inc. Harman International Industries Inc. Host Hotels& Resorts Inc. Legg Mason Inc. Lockheed Martin Corp Marriott International Inc Medlmmune Inc. NIl Holdings Inc. Norfolk Southern Corp Pepco Holdings Inc. Sallie Mae Sprint Nextel Corp T. Rowe Price Group Inc. The Washington Post Co Year Founded 1906 1952 2004 1980 1927 1899 1995 1927 1988 1996 1982 1896 1972 1899 1937 1877 229 3,800 140,000 151,000 2,516 7,748 30,594 5,057 11,456 64,000 4,605 17,100

math   Statistics-And-Probability   
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Answer Date: 28/01/2019 The stem-and-leafplot of year founded is, By using Excel software, find stem-and-leafplot with the help of following steps: 1) mport the data. 2) Select MegaStat option from Add-Ins menu 3) Select Stem-and-leaf plot from Descriptive Statistics. 4) Click Ok. BoxPlot 1800 1850 1900 1950 2000 2050 Year founded From Excel output, the stem-and-leaf plot of year founded concludes the shape of the distribution is skewed to the left and there is no potential outlier in the year foundedThe stem-and-leafplot of employees is, By using Excel software, find stem-and-leafplot with the help of following steps: 1) Import the data. 2) Select MegaStat option from Add-Ins menu. 3) Select Stem-and-leafplot from Descriptive Statistics 4) Click Ok. BoxPlot o O 0 20000 40000 60000 80000 100000 120000 140000 160000 Employees From Excel output, the stem-and-leaf plot of employees concludes the shape of the distribution is skewed to the right and there are three potential outliers in employees which are 81000, 140000 and 151000.

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