Scientists take scientific measurements carefully in order to ensure their reliability and validity. what is the difference between accuracy and precision in scientific measurements? a. accuracy is how far out the measurement is taken, while precision is how close a measured value is to its true value. b. accuracy is how close a measured value is to its true value, while precision is how close measured values are to each other. c. accuracy is how close a measured value is to its true value, while precision is how close the average value is to the true value. d. accuracy and precision are two different words for the same thing.