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Gamerkingjames
The median of this set of data would be C 22. A medians is the very center of all the numbers aligned up from smallest to largest.
trampoline
There are 13 dots, so the 7th one, from least to greatest, is the median. 20 has 2 dots and 21 has 4 dots. That is 6 dots. Therefore, the 7th dot is 22. Hence, the answer is C. 22.