What conclusion can be determined from the dot plot below?
AThe median of the data set is 3.
BThe mean of the data set is 3.
CThe range of the data set is 5.
DThe number of observations is 15.
AThe median of the data set is 3.
BThe mean of the data set is 3.
CThe range of the data set is 5.
DThe number of observations is 15.