The following data represents the percent change in tuition levels at public, four-year colleges (inflation adjusted) from 2008 to 2013 (Weissmann, 2013). Below is the frequency distribution and ogive.

Class Limits

2.2-11.7, 11.8-21.3, 21.4-30.9, 31.0-40.5, 40.6-50.1, 50.2-59.7, 59.8-69.3, 69.4-78.9

Cumulative frequency

6, 26, 37, 41, 43, 45, 48, 50

Based on the information, how many colleges had a percent change in tuition below 50.2%?