To determine the average amount of money that Jessica's budget allowed for clothing in the first six months of 2001, we first need to calculate her average monthly earnings during this period. Jessica's earnings for each month are: January $2578, February $2432, March $2668, April $2490, May $2622, and June $2555. The sum of these amounts is $15,345. Dividing this sum by 6 gives us the average monthly earnings: $15,345 / 6 = $2,557.50. Clothing accounts for 10% of Jessica's budget. Therefore, the average amount allocated for clothing each month is 10% of $2,557.50, which is $255.75.