A row of a stem-and-leaf chart appears as follows: 3

Question

A row of a stem-and-leaf chart appears as follows: 3 | 0 1 3 5 7 9. Assume that the data is rounded to the nearest unit.
A) The frequency of the class is seven.
B) The minimum value in the class is 0.
C) The maximum value in the class could be 39.
D) The class interval is 5.

Quizplus · Accepted Answer

Since the stem is 3 and the leaves range from 0 to 9, the class includes all values between 30 and 39 (rounded to the nearest unit). Therefore, the maximum value in the class is 39. The frequency is the number of data points in the class, which is 6. The minimum value in the class is 30, not 0. The class interval is the difference between consecutive stems, which is 1 in this case.