Answer:
The first one is by far easier to read.
We still have to write all values out to work out median.
Step-by-step explanation:
The first one is much easier to read.
12,15,16,16,17,17,17,19,19 is easier to read and see a median of 17.
The second one
1,4,6,8,10,12,14, 16,18, 20 has two ways of reading and displaying data
= median of 11
1,1,4,4,6,6.10.10.12.12.14.14,16,16,18,18,20,20
automatically is read with a greater population size and confuses the reader to believe one side is enough to tell the median of 11.
Infact because it has a population size of 20 it would be easier to incur errors, and this would make the median change if just one (1) was left out then it would alter the median by 1 and become 12.