The term "accuracy" best refers to which of the following?
a. whether or not a measurement is correct
b. how "close together" a set of measurements is
c. whether or not a tool for making measurements is useful
d. how close a measurement is to an accepted value for the measurement

d. how close a measurement is to an accepted value for the measurement

Explanation:

Accuracy can be define as the quality or state of some measurement being correct depending upon the measurement, specific conformations and calculations. It refers to the closeness of the measurement to a define specific or acceptable value. It is the degree of correctness of a particular value obtain after the measurement.    

d is the correct answer

total distance/total time

(85 + 82)/(5+3)

167/8

20 just over