Symbol 'X' denotes
.An "O" often is used to represent responses for the right ear and an "X" is used to represent responses for the left ear. A key on the audiogram, similar to one found on a map, identifies what the different symbols mean Hence, indicates air conduction test for left year Ref physiology textbook A. K Jain.. 3e
Air conduction threshold for right ear
Bone conduction threshold for right ear
Air conduction threshold for left ear
Bone conduction threshold for left ear
All India exam