The dot plot below shows the number of toys 21 shops sold in an hour: dot plot labeled number of toys sold shows 6 dots over 0, 4 dots over 1, 3 dots over 2, 3 dots over 3, 2 dot over 4 and 3 dots over 9 is the median or the mean a better center for this data and why? a. median; because the data is not symmetric and there are outliers b. median; because the data is symmetric and there are no outliers c. mean; because the data is symmetric and there are no outliers d. mean; because the data is skewed and there are outliers