A teacher has collected the following sample data of the number of children absent from the grade 7 class per day, in the past week:

3; 5; 12; 3; 2

Determine the sample variance of the data set to one decimal place.

[Answer format: dd,d (d: digit)]

[Example of an answer in the correct format: 12,3]

Ensure that your answer is typed in the correct format otherwise you will forfeit the mark!