#### Answer

No

#### Work Step by Step

The properties of relative frequency distributions must be true for the given distribution.
The relative frequency of each outcome is a number between 0 and 1. That is true.
The relative frequencies of all the outcomes add up to 1. That is not true, because $0.2+0.1+0.2+0.1=0.6$
Therefore the given distribution cannot be a relative frequency distribution.