The average loss from robbery in the United States in 2009 was $1,246. (Source U.S. Federal Bureau of Investigation). Suppose that government agency wanted to know whether the type of robbery differs in the years 1995, 2000, 2005, and 2009. A random sample of robbery reports was taken from each of these years and the types recorded using the codes that follow. Determine whether there are differences in the types of robbery over the 16-year span.
1. Street or highway
2. Commercial house
3. Gas station
4. Convenience store
5. Residence
6. Bank
7. Other