The dot plots below show the time it takes for 9 U. S. students and 9 Australian students to get to school. Which statement is TRUE about the variability of the Australian data set?

Medium 61b7c1326f18c0454649b8a8
It is exactly equal to the variability of the U. S. data set
It is significantly less than the variability of the U. S. data set
It is significantly greater than the variability of the U. S. data set
It is approximately equal to the variability of the U. S. data set
Variability cannot be determined from dot plots