The term precision refers to how precisely an object of study is measured. Measurements of an object can be made with various degrees of precision. The amount of precision will vary with the research requirements. For example, the measurement of baby ages requires a more precise measurement than that of adult ages; baby ages are measured in months, whereas adult ages are measured in years.

The term precision also refers to the degree to which several measurements of the same object show the same or similar results. In this regard, precision is closely related to reliability. The closer the results of measurements, the more precise the object measurement is. Measurement with high precision is very likely to produce the same and predictive results.

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