I’m not sure how to figure out the relative frequency of this chart or just relative frequency in general, and I need some help.

Answer: 0.25
Explanation:
Relative frequency = frequency/total frequency
From the table,
number of people who participated in swimming and not swimming = 50
Total frequency = 120 + 50 + 25 + 30 = 200
Relative frequency of people that participated in swimming and not fishing = 50/200
Relative frequency of people that participated in swimming and not fishing = 0.25