describe an association between two numerical variables in terms of direction (positive/negative), form (linear/non-linear) and strength (strong/moderate/weak)
ACMGM056
use a scatterplot to identify the nature of the relationship between variables
ACMGM064
recognise that an observed association between two variables does not necessarily mean that there is a causal relationship between them
ACMGM065
identify possible non-causal explanations for an association, including coincidence and confounding due to a common response to another variable, and communicate these explanations in a systematic and concise manner
