why is this the revenue? shouldn't it be much greater?

Several factors affect the ticket and concession sales. These factors include day of the week the game was played, the location of the game home or away, and whether it was a conference game or not. After running a linear regression, it has been observed that the demand of the tickets varies on a yearly basis. After taking all variables into consideration, the revenue from sales of season tickets, single game tickets, and concession items for a single season was $7288.16.