Final answer:
Spearman's rho does not necessarily describe a linear relationship between two quantitative variables.
Step-by-step explanation:
The statement is False. Spearman's rho, also known as Spearman's rank correlation coefficient, measures the strength and direction of the monotonic relationship between two quantitative variables, not necessarily linear. Monotonic means that as one variable increases, the other variable either consistently increases or consistently decreases. A linear relationship, on the other hand, describes a relationship where the variables increase or decrease at a constant rate.