The side-by-side stemplot below displays the arm spans, in centimeters, for two classes.
Arm Span (cm)
Class A
Class B
8 | 14
31 15 3
9 65 15 5 6
4 2 1 160222 33
995 5 6 7
10 17
03
99 65 17
320 18 0 1 2
66
18 9
0 19 2
19
20 | 2
Key: 1515 = 155 cm
Which statement correctly compares the variability of
the arm spans for Class A to that of Class B?
The arm spans for Class A have more variability than
the arm spans for Class B.
The arm spans for Class B have less variability than
the arm spans for Class A.
The arm spans for Class A have less variability than
the arm spans for Class B.
The arm spans for Class B have about the same
variability as the arm spans for Class A.
16
OO