Final answer:
There are no outliers in the given stemplot of grades on a quiz.
Step-by-step explanation:
To identify outliers in the given stemplot, we need to look for values that are significantly different from the rest of the data. In this case, the stemplot displays the grades of 26 students on a quiz, ranging from 12 to 30. Since there are no values that are noticeably higher or lower than the others, we can conclude that there are no outliers in the data.
The correct answer is (a) Boxplot with points at 12, 14, 15, 16; whiskers 20-30; box 23-27; line dividing box at 25.