Question

How to find the accuracy and precision from the given set of results.

Answer 1

The accuracy is a measure of the degree of closeness of a measured or calculated value to its actual value. The percent error is the ratio of the error to the actual value multiplied by 100. The precision of a measurement is a measure of the reproducibility of a set of measurements.

Find the difference (subtract) between the accepted value and the experimental value, then divide by the accepted value. To determine if a value is precise find the average of your data, then subtract each measurement from it. This gives you a table of deviations. Then average the deviations.

Answer 2

Answer:

Helloo, Accuracy refers to the agreement of the measured quantity to the true value of the result. Simply we can say if the true value is 3.0g then if the measured values are 3.5 and 2.5 then their average would be 3.0g na? So, this is accurate.

Now, Precision means the closeness of various measurements to the same quantity. Well, this actually means that the measurements recorded are close to each other but may or may not be close to the result.For example, 3.65 and 3.66 are close to each other and differ only by 0.01. So, these are precise but not accurate(coz they are not close to 3.0g).

Suppose if we take 2.9 and 3.1 then their average would be equal to the true value i.e., 3.0g

Hope it helps you..Please help me too if you found it easy...