Number of Students versus Average Test Grade
Number of Students 24 4 3 7 18 26 14 16 4
Grade 78 98 50 42 86 92 90 87 61
A math teacher kept track of his students' grades on the last 8th-grade math exam. Which scatterplot represents the data?
Since there are only 9 data points given, we can create a scatter plot by plotting each data point individually. Each data point consists of a number of students and an average test grade.
We can plot the data points on a coordinate plane, with the x-axis representing the number of students and the y-axis representing the average test grade.
Since we have discrete values for the number of students and the average test grade, we will use individual points to represent each data point.
Plotting the data points gives the scatter plot below:
(Number of Students, Grade)
(24, 78)
(4, 98)
(3, 50)
(7, 42)
(18, 86)
(26, 92)
(14, 90)
(16, 87)
(4, 61)
Based on these data points, the scatter plot should look like this:
scatterplot