Question

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.

A. (0.5,45)

B. (2.5,87)

C. (4.5,97)

D. (1,78)

Answer 1

B. (2.5,87) is the outlier in this scatterplot. The reason is it significantly deviates from the general trend of the data points, being much higher on the vertical axis compared to other data points in that range of the horizontal axis.