Which term is defined as a characteristic or constant factor, limit?

• A. Ongoing
• B. Oral
• C. Pathogenic
• D. Parameter

Answer: (D)

A parameter is a value that characterizes a population and is treated as a constant in models. It describes a fixed property of the whole group, such as the population mean or population proportion, even if we don’t know its exact value. This contrasts with statistics, which are computed from samples and can vary between samples. The other terms don’t fit because ongoing implies continuation, oral relates to the mouth or administration route, and pathogenic means disease-causing.