Keisha surveyed a group of people to find their age and their shoe size. She then graphed the order pairs (age, shoe size) for each person. Which of the scatter plots most likely represents her graph?

Question

Keisha surveyed a group of people to find their age and their shoe size. She then graphed the order pairs (age, shoe size) for each person. Which of the scatter plots most likely represents her graph?

Scatter plot I shows points approximating a line decreasing from the upper left to the bottom right.
Scatter plot I I shows points with no approximate pattern.
Scatter plot I I I shows points approximating a line increasing form the bottom left to the upper right.
A. Graph I
B. Graph II
C. Graph II

Answer 1

B. Graph II shows no particular pattern, which is likely if there is no significant correlation between age and shoe size. The other two scatter plots suggest that there is a correlation, either positive or negative.