ACCURACY and PRECISION

Question 1

how close a measurement is
to the accepted value.

Answer 1

Accuracy

Question 2

how close a series of
measurements are to one another or
how far out a measurement is taken.

Answer 2

Precision

Question 3

A measurement can have high precision,

Answer 3

but not be as accurate as a less precise one

Question 4

The correct value for the measurement based on reliable references,

Answer 4

Accepted Value

Question 5

The value measured in the lab.

Answer 5

Experimental Value

Question 6

The difference between the experimental value and the accepted value is called

Answer 6

Error

Question 7

Formula for Determining Error

Answer 7

Error = experimental value – accepted value

Question 8

Boiling- point measurement error is

Answer 8

99.1C -100C, -0,9C

Question 9

A measurement is the absolute value of the measured experimental value minus the accepted value divided by the accepted value, multiplied by 100%.

Answer 9

Percent Error

Question 10

Percent Error Formula

Answer 10

Percent error =
measured - accepted/accepted value x 100%