The term "normal range" refers to a set or predetermined values that are considered standard, typical, or within an acceptable limit. In various contexts and fields such as medicine, science, engineering, finance, etc., normal ranges can be used to describe the expected or average performance, behavior, or results of something.
For example, in medical diagnosis, a "normal range" refers to the standard values for certain physiological measurements like blood pressure, temperature, pulse rate, cholesterol levels, and other vital signs that are considered within the acceptable limits for an average healthy person. In this context, if a patient's measurement falls within the normal range, it indicates that their condition is not abnormal or out of the ordinary.
In finance, "normal range" can refer to the standard deviation of stock prices or other financial indicators which helps investors understand how much the stock price deviates from its average value over a period of time. If the stock's performance falls within the normal range, it indicates that the company is performing as expected and there are no significant concerns for investors.
In summary, "normal range" refers to a set of values or standards that define what is considered typical, acceptable, or ordinary in various fields and contexts.