Here’s a very simple and fun project in basic statistics. The title would be as follows: “Prevalence of obesity in two different populations of customers”.
To do the project you would park your car outside two different restaurants at noon or dinner time, counting everyone entering (or exiting) and placing each person in a column labeled “obese” and “not-obese”. Count 50 or 100 customers at each restaurant.
The two restaurants should be different in a way that might affect the type of customers they would attract, for example Hometown Buffet and Fresh Choice.
Apply basic statistics to determine if there is a significant difference in the incidence of obesity between the two populations of customers.
In case your textbook is not helpful, I have included a good reference on basic statistics.