1. What is one potential error that Grandjean et al. (1998) might have made in analyzing their data? (one or two sentence error) Answer sketch: Here are several possibilities, of which you need to develop only one for full credit: (1) Errors in transcriping their data, that is in transferring it from their lab notebooks to computer files. (2) Computer programming errors, that is bugs in the computer programs used to undertake the statistical analysis. (3) Assumptions made by the statistical analysis. For example, many statistical analyses assume that the data is normal.

Wrong answer: It would be incorrect to answer this question by describing an error in the data, as opposed to an error in the analysis of the data.