Accuracy Precision Significant figures International System of Units-SI 1. Determine which of the following statements are quantitative (QN) and which are qualitative (QL).
Accuracy: refers to how close a measurement is to a true, accepted or target value. Precision: Refers to the reproducibility of a series of measurements. 1. The following measurements were made to determine the density of a material whose value was, according to the Handbook of Chemistry and Physics, 1.24 g/mL Trial #1 Trial #2 Trial #3.
Accuracy: refers to how close a measurement is to a true, accepted or target value. Precision: Refers to the reproducibility of a series of measurements. 1. The following measurements were made to determine the density of a material whose value was, according to the Handbook of Chemistry and Physics, 1.24 g/mL Trial #1 Trial #2 Trial #3.
The accuracy of a measurement is determined by how close the measured value is to the actual value. The precision of a measurement is determined by how close repeated measurements are
Precision versus Accuracy: Look at each target and decide whether the “hits” are accurate, precise, both accurate and precise, or neither accurate nor precise: (Note: An accurate “hit” is …
Chapter 1 & 2 Worksheet: Precision, Accuracy, & Significant Figures Accuracy indicates how close a measurement is to the true or accepted value. Precision refers to the reproducibility of a measurement. No measurement of a physical quantity is absolutely certain.
Poor accuracy involves errors that can often be corrected. On the other hand, precision describes how exact a measurement can possibly be. For example, a measurement of 1.325 m is more precise than a measurement of 1.3 m. A lack of precision is typically due to limitations of the measuring instrument and is