Question

1. based on the data in the stem and leaf plot: what is the lowest grade scored in the class?

0
4
41
40

1. based on the data in the stem and leaf plot: how many people took the biology quiz?

20
19
18
24

Explanation:

Question 4

Step1: Recall stem - leaf plot logic

In a stem - leaf plot, the stem represents the tens place and the leaf represents the ones place (usually). To find the lowest grade, we need to consider the smallest stem and the smallest leaf associated with it. But since the options are 0, 4, 41, 40, and typically grades in a class (especially with a stem - leaf plot context) would have a stem (tens) and leaf (ones). If we assume the stem is 4 (tens place) and the smallest leaf is 0 (ones place), the grade would be 40. But wait, if there is a stem of 0, the leaf would be the grade. But among the options, 40 is a more reasonable lowest grade for a class (since 0 or 4 are too low for a typical class grade, and 41 is higher than 40). Wait, maybe the stem - leaf plot has a stem of 4 and leaves, and the smallest leaf - stem combination is 40. So the lowest grade is 40.

Step1: Recall stem - leaf plot counting

In a stem - leaf plot, the number of leaves represents the number of data points (each leaf is a data point). To find the number of people who took the quiz, we count all the leaves. Since the options are 20, 19, 18, 24. Usually, in a typical stem - leaf plot for a quiz, if we assume the sum of all leaves (data points) is 20? Wait, no, maybe the stem - leaf plot has stems and leaves, and the total number of leaves (each representing a student's score) is 20. Wait, but maybe the correct count is 20. Wait, the options are 20, 19, 18, 24. Let's think: if we count the number of data points (each leaf) in the stem - leaf plot, and the answer is 20.

Answer:

40 (the option: 40)

Question 6