Question

Mary smith obtained a density of 2.226g/ml for a metal sample. Using a different method, Joseph Henry obtained a value of 2.335g/mL for the same metal sample. Which student’s value is more accurate? Use the definition of accuracy to explain your answer. the true value is 2.300g/ml.

Answer 1

Joseph Henry.

Step-by-step explanation:

Hello,

In this case, we define the accuracy based on the degree of deviation a measure has regarding the the true or expected value. In this case, the lower the difference, the more accurate the procedure. In such a way, for the two students, we compute the difference between the expected value and the obtained value:

`Mary=2.300g/mL-2.226g/mL=0.074g/mL`
`Joseph=2.335g/mL-2.300mL=0.035g/mL`

In such a way, since the difference is lower in Joseph's measure, we can say he is the most accurate.

Best regards.