1.9 The Mobile Register (Nov. 16, 2003) reported information about Alabama’s 203 aerospace companies.

The companies were classified into different sectors. Table below shows the distribution of companies by sector classification and the numbers of employees in each sector.

a Construct a bar chart to summarize Alabama aerospace employment. Describe the results.
b Construct an appropriate plot to compare the number of employees per company in different sectors. Discuss the results.

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No. of No. of Aerospace Sector Companies Employees General manufacturing 30 1,070 Missile and space vehicle parts mfg. 18 2,367 Aircraft parts maintenance, repair, and overhaul 20 2,248 Engineering and RFD services 6 6,831 Information technology services 86 12,832 Missile space vehicle mfg. 5 5,095