0
Yes. Take, for example, the value of Pi. Pi is defined as the decimal equivalent of 22/7. 22/7 done manually is 3.142857 - which is accurate for most calculations. However - calculated by a computer, a more precise value can be obtained... The calculator built-in to Windowws produces the result 3.1415926535897932384626433832795
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
Is it possible to have measurement that are precise but not accurate?
Yes it is possible. 21.354 inches is very precise but could be inaccurate.
Is it possible to get a precise measurement that is not accurate?
Certainly. Precision and accuracy do not mean quite the same thing. All measuring tools need to be recalibrated from time to time against a standard. For instance you can get a very precise reading from a micrometer or vernier gage but if it has not been correctly calibrated the reading will not be accurate.
Are precise measurements always accurate?
No. A broken clock gives a very precise time, but most of the time it is wrong.
If you measure the mass of an object four times and get values that are very close to each other the measurements are said to be?
If you take a measurement multiple times, and get similar values each time, then the data is said to be very precise. If this group of data is very close to the expected value, then the data is said to be accurate. However, a set of data may be precise without being accurate if the measured values are all similar to one another, but not close to the expected value.
Explain why is a highly precise measurement doesn't not always mean a highly accurate one?
Accurate means how close the measured value is to the real, actual value. Precise means how reproducible the measurement is. So, if the real value is 1.00, and you measure it to be 0.785, and every time you measure it, it comes out the same (0.785), then the measurement is VERY precise, but not very accurate.
Can a measurement be precise without being accurate?
You can make a very precise measurement with a poorly calibrated device.
Is it possible to have measurement that are precise but not accurate?
Yes it is possible. 21.354 inches is very precise but could be inaccurate.
Is it possible to get a precise measurement that is not accurate?
Certainly. Precision and accuracy do not mean quite the same thing. All measuring tools need to be recalibrated from time to time against a standard. For instance you can get a very precise reading from a micrometer or vernier gage but if it has not been correctly calibrated the reading will not be accurate.
Why would it be important for your lab results to be both accurate and precise?
A group of precise measurements are a group of repetitive measurements that are very close together. Ie the standard deviation between the measurements is small. Not to be confused with a accurate measurement! Think about it like this, if you measure a piece of wood 5 times and each time you get an identical answer then the measurement are said to be precise. If however if turns out that despite measuring the length 5 times and getting the same answer you discover that the length is significantly off from the "true" answer, then you were inaccurate!
Are precise measurements always accurate?
No. A broken clock gives a very precise time, but most of the time it is wrong.
Are you very accurate?
Yes you can be accurate but not precise and vice versa. Think about trying to hit the bull's eye of a dart board or target. You could throw a dart 5 times and hit the same spot 5 times (very precise) but hit far away from the center (not very accurate). You could throw 5 times and get near the center (accurate) but never hit the same spot (not precise).
What is Limit of precision?
The precision of something just means that the result can be repeated again and again. Everytime you repeat an experiment, you will get the same result. But that doesn't necessarily mean that the results are accurate! Your measurments, results, whatever can be very precise, but completely inaccurate. Accuracy is how close something is to the true value. For example, say I have a ruler. I have used this ruler to measure my table 10 times. Every time I measure the table, I get a measurement of 10ft. My measurement is very precise. However, what I don't know is that there is a fault with my ruler. The inches on my ruler are not true inches. Each inch may actually be only 1/9th of an inch. Or all the inches on my ruler may not even be the same. So while my measurements I took with my ruler 10 times are precise, they are not accurate because there is fault with my ruler. Something can be precise, but not necessarily accurate! I would say that this is the biggest limitation of precision. A precise measurement is not always a reliable one!
What is a group of precise measurements?
A group of precise measurements are a group of repetitive measurements that are very close together. Ie the standard deviation between the measurements is small. Not to be confused with a accurate measurement! Think about it like this, if you measure a piece of wood 5 times and each time you get an identical answer then the measurement are said to be precise. If however if turns out that despite measuring the length 5 times and getting the same answer you discover that the length is significantly off from the "true" answer, then you were inaccurate!
If you measure the mass of an object four times and get values that are very close to each other the measurements are said to be?
If you take a measurement multiple times, and get similar values each time, then the data is said to be very precise. If this group of data is very close to the expected value, then the data is said to be accurate. However, a set of data may be precise without being accurate if the measured values are all similar to one another, but not close to the expected value.
What does the word regorous?
it's actually spelt rigorous. it means very accurate and precise.
What is profile measurement using profile projector?
The profile measurement using a profile project gives the accurate length of a given a profile. A profile projector provides a very accurate profile measurement of the same.
Can measurements be accurate and not precise?
Precision is a measure of how close to each other repeated measurements are. Accuracy is how close to a target value the measurement is. The only reason this unneccessary bit of info is in your book is to cram kids' heads with useless info. Very few scientists or engineers care about this trivia. Real science is about understanding how things work.
