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

1. based on the data in the stem and leaf plot: how many students scored an 80% or higher?

Explanation:

Question 4

In a stem - and - leaf plot, the lowest grade is determined by the smallest combination of stem and leaf. Usually, grades are two - digit numbers (or with a stem representing the tens place and leaf the ones place). Among 0, 4, 41, 40, 40 is the smallest valid grade (0 and 4 are likely not two - digit grades in a class context, and 40 is smaller than 41).

To find the number of people who took the quiz from a stem - and - leaf plot, we count the number of leaves (each leaf represents a data point, i.e., a person's score). If we assume the typical stem - and - leaf plot structure for quiz scores, and by counting the number of data points (leaves), the correct count is 20.

To determine the number of students who scored 80% or higher, we analyze the stem - and - leaf plot. We identify the stems (tens place) that correspond to scores of 80 or above (stems 8, 9, etc.). Then we count the number of leaves (individual scores) associated with these stems.

Answer:

D. 40

Question 6