The number of pets per household for Mrs. Anderson's class and Mrs. Murphy's class are shown in the dot plots.
Mrs. Anderson's Class
Mrs. Murphy's Class
8
o i 2 3 4 5 6 7 8
Number of Pets per Household
o i 2 3 4 5 6 7
Number of Pets per Household
Here are three statements about the number of pets per household for these two classes.
1. The range of the number of pets per household for Mrs. Murphy's class is greater than the range of
the number of pets per household for Mrs. Anderson's class.
II. The distribution of the data is approximately symmetrical in both sets of data.
III. The mode of the number of pets per household for Mrs. Anderson's class is equal to the mode of the
number of pets per household for Mrs. Murphy's class.
Which of these three statements appear to be true?
a. l only
b. I and III
c. II and III
d. III only