Explain how results can be precise but not accurate?
Precision is the degree to which the results of multiple repeat experiments agree with one another. For instance if an experiment is repeated 3 times and the same result is obtained all three times, then the result is considered to be very precise. Accuracy is the degree to which the results of an experiment agree with the true or known value. An experiment or set of experiments may be very precise but not accurate. Less commonly, the results could be accurate but not precise. source my physics book i just read it some where this week....Physics Demystified.
How can results be precise but not accurate?
Someone could be very meticulous about researching something but still come up with an incorrect conclusion about their careful work.
How can results from an experiment be precise but not accurate?
One example is if the tool you are using to measure something is not calibrated properly you will get consistent, but wrong answers. For example, if your ruler is not spaced properly and you measure something 100 times, you'll get the same value each time --> thus your experiment was precise. However, if you compare this value to the actual value, it will be way off (and thus not accurate).
Would you rather be accurate or precise?
Well, i'm going with the physics definition of precise and accurate. And I would rather be accurate. Presicion is hitting multiple times a spot without ever looking beyond the result youre getting over and over again. Its more of a systematic error than someone really trying to get an answer(hit the center). Instead accuray gets close to the point just not all the time, and I feel this is much more human as sometimes we are close to the answer just not completely sure it is it. So we try different things and we mess around with the center of truth, and we undertand it much more than anyone who thinks precisely and only looks at their repetitive results.
How to get more precise results?
Hello, I am in grade 12 chemistry and did a lab on finding the Ksp of PbI2... We took different solutions and mixed them together and found the precipitates. This was done in several spot plates... what can be done to get you more precise results(not accurate results, precise!) without using different equipment?
Can measurements be precise and not accurate? Why? also can measurements be accurate and not precise? Why?
Yes to both: Precision- How close a set of results are to each other Accuracy- How close a set of results are to the correct result e.g. I'm finding the mass of substance x. The correct mass is 10g. I get the following results: 17.7g, 17.8g, 17.9g- Precise, because they're close together, but not accurate because they are far from the right answer 9g, 10g, 11g- Accurate, because they are close to the right answer, but not precise because they are far from each other
What is an example of measurement that is accurate but not precise?
Accurate means the measurement is close to its actual value. Precise means that every time you repeat the measurement, you get a similar answer. That answer, however, may be way off due to, for example, a bad calibration. In answer to your question, a *single* measurement with poor reproducibility is imprecise, but it may be accurate by random chance.