英语翻译These summary measures provide some evidenceregarding the conjectured relationships between shippingfees and consumer demand.For example,the freeshipping policy generates the highest levels of order incidencewhile Schedule 1,which involves order size incentives,results in the largest average order sizes by more than$8.Table 1 also lists the average and standard deviationof inter-purchase times that occurred during each shippingschedule.

英语翻译
These summary measures provide some evidence
regarding the conjectured relationships between shipping
fees and consumer demand.For example,the free
shipping policy generates the highest levels of order incidence
while Schedule 1,which involves order size incentives,
results in the largest average order sizes by more than
$8.Table 1 also lists the average and standard deviation
of inter-purchase times that occurred during each shipping
schedule.