Which statement is NOT true? The side-by-side dotplot below displays the arm spans,
in centimeters, for two classes.
Arm Span (cm)
Class A
Class B
8 14
3 1 15 3
965 15 5 6
4 2 1 16 0 2 2 2 3 3
9 95 16 5 6 7
10 | 17
17 | 03
9 9 6 5 | 17
320 180 12
6 6 189
0 19
19
20 2
Key: 15/5 = 155 cm
The mean arm span appears to be similar for the
two classes.
O The arm spans for Class A have less variability than
the arm spans for Class B.
The arm spans for Class B have more variability
than the arm spans for Class A.
The arm spans for Class A are roughly symmetric,
while those for Class Bare skewed left.