The document summarizes research conducted at a restaurant to determine what factors influence tip amounts. It was found that the gender of the patron and time of day eating (lunch vs. dinner) had an influence on tip amounts, with men tipping more than women on average and dinner tips being higher than lunch tips. Other factors like day of week, smoker/non-smoker status, and party size were found to have little influence on tip amounts. The manager concluded servers should alternate lunch and dinner shifts as well as weekend/weekday shifts to help equalize tip earnings.