What type of data,also known as signs,are detectable by an observer?

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Objective data, also known as signs, can be observed and measured. They are measurable and quantifiable. Examples of objective data include vital signs, laboratory results, and physical examination findings. Subjective data, on the other hand, are based on personal opinions, feelings, and experiences, and therefore cannot be observed or measured. Variable data refers to data that can change from time to time, while constant data is data that remains the same over time.

What Type of Data,also Known as Signs,are Detectable by an Observer