Giveaway days , according to the data , had a negative impact on the concessions ' per cap , and most of this was probably a coincidence .
Most giveaways were on days of the week that had per caps lower than on normal days .
Giveaway days , according to the data , had a negative impact on the concessions ' per cap , and most of this was probably a coincidence , because most giveaways were on days of the week that had per caps lower than on normal days .