The company Sasbo conducts a study on gas consumption (In cubic meters) in the city's homes during the month of January, obtaining the data in the following table:

Gas consumption (in cubic meters)	City homes Number
0-200	10
200-400	40
400-600	60
600-800	10

a. Make the frequency table b. Represent a distribution histogram c. Calculate the average gas consumption of the dwellings. d. Calculate the most frequent consumption e. Determine the value of the third quartile of the gas consumption distribution and explain its meaning.