Skip to content
free
K
1
2
practice
Home
Math
English
Science
Social Studies
Contact
Language
English
Español
Sign In
/
College Test Prep
/
GMAT
/
Variance and Standard Deviation
Grade Level
GMAT
DI.079 Variance and Standard Deviation
0%
Skill Level
🔴 Hard
00:00
Progress to Next Level
25% to Medium
Easy
Medium
Hard
Mastery
100%
City A's commute-time standard deviation is 7 minutes. City B's commute-time variance is 36 minutes squared. Which statement is correct?
A
City B has more variable commute times because 36 is greater than 7.
B
City A has more variable commute times because City B's standard deviation is 6 minutes.
C
The cities have equal variability because both values are near 6 or 7.
D
City B must have the longer average commute.
Submit Answer