A social worker examines a small dataset from an adoption clinic showing age at adoption (months) and a simple measure of disinhibited attachment behaviour scored 0 to 10 at age 4 (higher = more disinhibited). The six children's data are: Child A: adopted at 3 months, score 1; Child B: 5 months, score 2; Child C: 8 months, score 5; Child D: 12 months, score 7; Child E: 18 months, score 8; Child F: 2 months, score 0. Using this dataset, answer the parts below.
(a)Calculate the mean disinhibited attachment score for the three children adopted before 6 months (Children A, B and F). Give your answer to 2 decimal places.(3)
(b)Using the full dataset, suggest briefly what the data show about the relationship between age at adoption and disinhibited attachment at age 4, and state one limitation of drawing conclusions from this small dataset.(3)
(Total for Question 6 is 6 marks)