The answers were divided into three age groups; 4; 0–4; 3, 4; 10–5; 1 and 5; 8–5; 11 years old, in order to make an aged based comparison.
Úrlausnum var skipt í þrjú aldursbil; 4; 0–4; 3, 4; 10–5; 1 og 5; 8–5; 11, til að gera samanburð á aldri mögulegan.