Question

The stem-and-leaf plot shows the test scores of a science class. Use the plot to answer the question.

How many students scored 78?

Answer 1

4 Students

Explanation:

If you look at the four and cout how many 8 are across you will get 4!

Answer 2

4 students

Explanation:

Understanding stem-and-leaf plots

A stem and leaf plot is designed in a way to group the numbers by their values before the ones place;

i.e. 92, 100, 101, 103, 113

Charted as

9 | 2

10 | 0 1 3

11 | 3

So, with that in mind we know 78 is grouped under the 7 | # # #

stem and has the leaf of 8 which is displayed by # | # # # 8

SO,

TO SOLVE:

Count the 8's under the 7 | # # # # group

We can see that there are 4 8's under that section, and assuming that each number is representative of one students score, we can conclude that 4 students scored 78

Hope this helps,

J.M."Jamon"

Pennsylvania State University

Full-Time B.S.CE. Undergrad