Weight (carats)

0.4 3.5 0.8 0.5
0.6 0.5 0.8 0.6
0.9 2.2 0.5 0.7

The mean is
---, the median is
---, and the mode is
---.

mean: add 'em up and divide by 12

sort from low to high.
The median is the average of the two middle values
The mode is the value which occurs most often