The head size of an 8 year old child is found to be 1800 cm3, What caution(s) should be noted if asked to predict this child’s brain weight? (Select all that apply.)

Correlation does not imply causation for brain weight.

Extrapolation – A head size of 1800 cm3 is outside the range of our data.

Extrapolation – The model was created using only data for adults, not children.

We do not know if the child is male or female.

No cautions need to be noted, it is fine to plug in the 1800 cm3 in to our estimated regression line to make the prediction.