Answer: The relative frequency of column A in group 1=

The relative frequency of column B in group 1=

The relative frequency of column A in group 2=

The relative frequency of column B in group 2=

Explanation:
The relative frequency is the ration of each frequency by the total value in particular group.
For group 1 : Total =102+34=136
The relative frequency of column A in group 1=

The relative frequency of column B in group 1=

For group 2 : Total =18+14=32
The relative frequency of column A in group 2=

The relative frequency of column B in group 2=
