This is the best approach when there is a small number of employees.

A candidate for a dental hygiene position is asked to work one day on a

trial basis.

This approach often takes considerable time to implement.

To assess a new assessment measure, the compary has selected $100$

employees to take a personality inventory to see how they correlate with

existing performance measures.

Gloria wants to check whether a skills test given at the time of hire

correlates with career advancement of a three$-$year period.

The city police are analyzing whether there is a correlation between fitness

and firing range scores.