The correct statement is: "The data in Set A are skewed left because the mean is less than the median. The data in Set B are symmetrical because the mean is equal to the median."
For Set A: Mean = (20 + 22 + 24 + 3 + 28 + 26 + 30) / 7 = 20.71
Median = 24
In this case, the mean is less than the median, which indicates a left skewness. Therefore, the statement "The data in Set A are skewed left because the mean is less than the median" is true.
For Set B: Mean = (19 + 47 + 24 + 17 + 32 + 51 + 34) / 7 = 30
Median = 32
In this case, the mean is equal to the median, which indicates symmetry. Therefore, the statement "The data in Set B are symmetrical because the mean is equal to the median" is true.