If a person makes the same measurement repeatedly, but the measurement is not related to the standard value?

Question

If a person makes the same measurement repeatedly, but the measurement is not related to the standard value, the measurement is _______________.

Here are your options:
Neither accurate, nor precise
Precise, but not accurate
Both accurate and precise
Accurate, but not precise

Thanks!

Answer 1

well its certainly not accurate because accuracy is how close something is to the accepted value. i suppose it would be precise but not accurate since they measured it repeadedly, because i think precision is how much margin of error is in your measurement.

Answer 2

Both accurate and precise due to the fact that the standard value can be incorrect. Repeatability is a common point used for determining reliability. If the same value is consistently read, but is different, then there is an error in either the measuring device, or in the expected result. Such as, a common flashlight "battery". The expected measurement is 1.5 volts. The standard value expects the battery voltage to be 1.5 volts, but it consistently is not. The measured value is consistently 1.3 volts in an open circuit where just the battery is being measured. The error would lay in the expected standard measurement because the battery is either partially discharged, or is a fully charged Ni-cad battery. (ni-cad; nickel-cadmium)

Answer 3

Accuracy - the extent to which a given measurement agrees with the standard value for that measurement

Precision - the extent to which a given set of measurements of the same sample agree with their mean

Therefore, measurements which agreed closesly with each other would be precise, but, if they did not agree with the standard, would not be accurate.

The above definitions are from Dictionary.com (Chem. Physics definitions)

Answer 4

You mean the "time-honored" technique this is unquestionably no longer "time-honored?" :P Yeah i think of the U. S. remains caught with it, although innovations like a million/2 and 3/4 are especially standard, no longer constrained to the device of length. :) seventy 5 centimeters = 3/4 of a meter. :)

Answer 5

persons can make very easy and correct measurements repeatedly
but do not related to standers,measurement,and standard, are two different things

Answer 6

Precise, but not accurate.

Please see the source for more.