please answer I will give Brainly , look at the picture I genuinely don’t understand

Answer:
See explanation
Step-by-step explanation:
66: Frequency: 2
Relative Frequency: 2/30=1/15
67: Frequency: 2
Relative Frequency: 2/30=1/15
68: Frequency: 2
Relative Frequency: 2/30=1/15
69: Frequency: 3
Relative Frequency: 3/30=1/10
70: Frequency: 6
Relative Frequency: 6/30=1/5
71: Frequency: 6
Relative Frequency: 6/30=1/5
72: Frequency: 2
Relative Frequency: 2/30=1/15
73: Frequency: 5
Relative Frequency: 5/30=1/6
74: Frequency: 2
Relative Frequency: 2/30=1/15