A survey of commercial buildings served by the Cincinnati Gas & Electric Company asked what main heating fuel was used and what year the building was constructed. A partial cross tabulation of the findings follows.

a. Complete the cross tabulation by showing the row totals and column totals.
b. Show the frequency distributions for year constructed and for fuel type.
c. Prepare a cross tabulation showing column percentages.
d. Prepare a cross tabulation showing row percentages.
e. Comment on the relationship between year constructed and fuel type.

Transcribed Image Text:

Fuel Type Oll 12 Year Electricity Natural Gas O Other Constructed 1973 or before 1974-1979 1980-1986 1987-1991I Propane 40 24 37 48 183 26 38 70 2 0 0