Information about the age of participants in a robotics competition is in the image

The middle 50% of the data is between what two numbers?
16 and 33
13 and 31
11 and 33
11 and 16

Information about the age of participants in a robotics competition is in the image The middle 50 of the data is between what two numbers 16 and 33 13 and 31 11 class=