Question

Use the image to answer the question.

A scatterplot shows the number of hours studied versus test grade.
The horizontal axis shows the number of hours studied, ranging from 0 to 10 in increments of 1. The vertical axis shows the test grade, ranging from 0 to 100 in increments of 5, starting with a jump from 0 to 35. A kink is shown on the vertical axis close to origin. A dot is plotted at 0.5 on the horizontal axis and 45 on the vertical axis. A loosely packed cluster of data plots is plotted between 1 to 4.5 on the horizontal axis and 77 and 98 on the vertical axis.

A math teacher gave a math test. Interpret the scatterplot to determine which point is the outlier.

(1 point)
Responses

(1,78)
left parenthesis 1 comma 78 right parenthesis

(0.5,45)
left parenthesis 0.5 comma 45 right parenthesis

(2.5,87)
left parenthesis 2.5 comma 87 right parenthesis

(4.5,97)

Answer 1

To identify the outlier in the scatterplot, we look for a point that deviates significantly from the general trend of the other points.

Based on your description:

- The point (0.5, 45) appears to be lower than the rest of the data points, which cluster around higher grades (77 to 98) for hours studied between 1 and 4.5.
- The other points, such as (1, 78), (2.5, 87), and (4.5, 97), fall within a tighter range of grades.

Therefore, the outlier is:

**(0.5, 45)**