Relative frequency

Subject frequency

Type

Group

Index

3.3%

1

I, II

Control

Burn depth

66.7%

20

II

26.7%

8

II, III

3.3%

1

II, III, IV

3.3%

1

I, II

Experimental

33.3%

10

II

56.7%

17

II, III

6.7%

2

II, III, IV