No, there is no outlier in either data set.
Dataset 3: {10, 39, 12, 26, 22, 20, 18} In this dataset, all values are relatively close, and there are no extreme values that significantly deviate from the others. The range is not extensive, and no data point appears to be unusually distant from the rest.
Dataset 4: {2, 42, 28, 26, 48, 32, 66} Similar to the first dataset, the values in this set are relatively close to each other. While there is a higher range compared to the first set, all values fall within a reasonable distance from the mean. There are no extreme values that would qualify as outliers.
In both datasets, the absence of extreme values and the relatively consistent distribution of data points result in the conclusion that there are no outliers present. The values in each set do not deviate significantly from the overall pattern, and the datasets exhibit a uniform distribution.