Step 1 :Step 1: Calculate the total number of students surveyed. This is equal to the sum of the number of students in each category. \(50+60+40+30+20=200\) students.
Step 2 :Step 2: Calculate the relative frequency of each category. This is done by dividing the number of students in each category by the total number of students. For example, the relative frequency of the category '0-5 hours' is \(\frac{50}{200}=0.25\).
Step 3 :Step 3: Repeat step 2 for each category. The relative frequencies for '5-10 hours', '10-15 hours', '15-20 hours', and '20-25 hours' are \(\frac{60}{200}=0.3\), \(\frac{40}{200}=0.2\), \(\frac{30}{200}=0.15\), and \(\frac{20}{200}=0.1\) respectively.