Boxplots compare reaction times of younger (Y) and older (O) participants.
Which statement is best supported?
- A
Younger participants are slower on average
- Bcheck_circle
Older participants are slower on average and more variable
- C
Older participants are faster but more variable
- D
Both groups have identical centers
Explanation
O's median is to the right (slower) of Y's, and O's box and whiskers span more — slower and more variable.