A table records the value 1 four times, the value 2 zero times and the value 3 four times. Select all statements that are true about this data. Select all that apply.

Explication

Only the frequencies count observations, so there are 4 + 0 + 4 = 8 values totalling 4 x 1 plus 4 x 3, which is 16, and 16 shared between 8 values gives 2. Dividing by 3 because three values are named is the usual slip, and it also overlooks that a frequency of zero means the value 2 was never recorded even though the table mentions it.