please help me understand how to answer this

Step Five: Frequency Table Complete the frequency table using the raw data: {3.5, 2.7, 1.6, 2.9, 1.7, 5.3, 7.5, 8.2, 4.6, 1.3, 4.7, 9.4, 7.6, 3.9, 3.2, 8.1, 4.9, 5.7, 2.6, 3.2, 6.5, 4.8, 3.5, 4.8, 9.2, 4.9, 1.1, 2, 6.4, 7.1} Class Class Boundaries Frequency 1.1 - 2.7 1.05 - 2.75 2.8 -4.4 2.75 - 4.45 4.5 - 6.1 4.35 - 6.15 CO 6.2 - 7.8 6.15 - 7.85 7.9 - 9.5 7.85 - 9.55 4 Check poms.net/mod/quiz/attempt.php?attempt=8263325&cmid=1046849&page=11#