Question

Alejandra measures the mass of a cup of baking soda three times. Her measurements all exactly reflect the actual mass of the baking soda.

If each measurement in a set of data has a high level of accuracy, this indicates

that the data set also has a high level of precision.

nothing about the level of precision of the data set.

that the precision of the data set cannot be evaluated.

that the data set has a very low level of precision.

Answer 1

@agent0smith

Answer 2

Precision means you get the same number over and over.

Accuracy means your numbers are close to what they SHOULD be.

eg. if you're trying to measure acceleration due to gravity, and you get the following results:
5.0 m/s/s, 4.99 m/s/s, 5.01m/s/s
then your measurements are precise, but not very accurate (since g=9.8m/s/s)

Answer 3

a

Answer 4

is this not physics?

Answer 5

If each measurement in a set of data has a high level of accuracy...

think of it like the example above. If you recorded g as 9.79, 9.81, 9.80, 9.79.

Your measurements are precise since they're all close together. They're accurate since they're spot on with g=9.8m/s/s

Answer 6

"So, if you are playing soccer and you always hit the left goal post instead of scoring, then you are not accurate, but you are precise!"

Answer 7

@trollwillcontinue

Code of conduct: OpenStudy values the Learning process - not the ‘Give you an answer’ process Don’t post only answers - guide the asker to a solution

http://openstudy.com/code-of-conduct

Answer 8

ok sure =) @Directrix