How is inaccuracy measured?

Answer 1

There are two key words to learn here: accuracy and precision.

Accuracy is how close you are to the actual value of something measured. This can be a problem if you don't know what the actual value is.

Precision is how close the different measurements you made are to each other.

You can have accuracy without precision if the average of all of your answers is on target. You can have accuracy with precision if all of your answers are on target; the average will be also.

You can have precision without accuracy if all of the answers are pretty close to each other but off target. You can have precision with accuracy, which is the same as accuracy with precision.

Now how much inaccuracy is involved depends on what you are measuring and how you measure it. This is a fairly technical area of science, one that students try to skip over because it tends to be boring, and requires some study beyond a simple answer on a forum like this. You can involve probability theory as well as statistics. You can do some other things too that have a mathematical basis. All beyond the simple answers you will get here. But the simplist answer would be that you can express accuracy in terms of a percentage of the diffenence between the true value and the measured value, that quantity divided by the true value. Inaccuracy would be its converse.

Answer 2

Mean & Standard Deviation

Answer 3

x= the number of answers to your question.
inaccuracy = (x-1)/x * 100%

Answer 4

Sometimes by absolute error, sometimes by percent error. Depends on what the purpose is.......

Answer 5

%error=(experimental - accepted)/(accepted) X 100

Answer 6

BY PEOPLE'S OPINIONS OF OTHER PEOPLE.

Boaz.