Define 'Risk'.

How would you write risk?

What can the perception of risk be?

Why would we overestimate a risk?

Why would we underestimate a risk?

What are the categories of risk factors?

What is the difference between correlation and causation?

What is Spearman's Rank coefficient?

D = difference in rank (order placement)
N = Number of individuals in the sample

How do you calculate Spearman's rank?