Final answer:
An expectancy chart is a graph that represents the relationship between test scores and job performance for a group of individuals, crucial in HR for correlating predictors with outcomes.
Step-by-step explanation:
The graph that shows the relationship between test scores and job performance for a group of people is known as an expectancy chart. An expectancy chart is often used in human resources and organizational psychology to visualize the correlation between various predictors, such as test scores, and outcomes, like job performance. This type of graph helps in understanding whether higher test scores are associated with better job performance and thus can be a valuable tool in the recruitment and selection process.