Complete these two different sets of data so that they each have six values and a mean of 21.

20,20.5,20.5,21.5,21.5,

20,21,21,21,21,

the square root of what number? if you add that, then someone will probably answer the question.

answer: 16

step-by-step explanation: first you would add 6+6 which equals 12 then add 2+2 which equals 4. then add 12 + 4 which is 16.

hope this ^_^