Answer to Question #291385 in General Chemistry for edf

Question

A student performs an experiment to determine the density of a sugar solution.  She obtains the following results:  1.27 g/mL, 1.29 g/mL, 1.28 g/mL, and 1.29 g/mL.  If the actual value for the density of the sugar solution is 1.86 g/mL, which statement below best describes her results?

Answer 1

The results are neither precise nor accurate.

Explanation:

Accuracy is defined as the closeness of a measured value to a standard or known value.

For Example: If the mass of a substance is 80 kg and one person weighed 88 kg and another person weighed 82 kg. Then, the weight measured by second person is more accurate.

Precision is defined as the closeness of two or more measurements to each other.