Answer:
below
Explanation:
52 -> 0 ; 52 doesn't show on the list of numbers
53 -> 1 ; 53 appears once on the list of numbers
54 -> 2 ; 54 appears twice on the list of numbers
55 -> 1 ; 55 appears once on the list of numbers
56 -> 2 ; 56 appears twice on the list of numbers
frequency is referring to how many times it appears so hope that helps.