The mean mass of group 1 is greater than the mean mass of group 2.
The mean mass of group 1 is less than the mean mass of group 2.
The median mass of group 1 is greater than the median mass of group 2.
The median mass of group 1 is less than the median mass of group 2.
Explanation
Correct answer: C.
Choice C is correct. The median of a data set represented in a box plot is represented by the vertical line within the box. It follows that the median mass of the gazelles in group is kilograms, and the median mass of the gazelles in group is kilograms. Since kilograms is greater than kilograms, the median mass of group is greater than the median mass of group .
Desmos solution:
Note: The middle bar of each box plot is its median, so Group 1's median is 25 kg and Group 2's is 24 kg.
Enter in Desmos:
Reviewed and rewritten by CookSAT
Why the other choices are wrong
Choice A
Choice A is incorrect. The mean mass of each of the two groups cannot be determined from the box plots.
Choice B
Choice B is incorrect. The mean mass of each of the two groups cannot be determined from the box plots.
Choice D
Choice D is incorrect and may result from conceptual or calculation errors.