1. Get a set of data.
2. Get it imported into Excel or Google Spreadsheets.
3. Calculate the following: mean, median, mode, range, standard deviation.
4. Create a histogram of your data.

Some examples of data you can look up:

Number of hurricanes by year

Number of 0.300 hitters on each MLB baseball team

Average soda consumption by state

Murder rates in the n largest American cities

Percentage victory margin in US House elections

CEO’s pay in Fortune 500 companies