Only if the items being measured are all identical. Otherwise you will lose the variation between individual items.
It would be sensible to measure the mass of ten identical coins and take their average as a measure of the mass of a coin. But the average mass of ten people is not a more accurate measure of any of their masses.
Going into a smaller scale, such as to make Cm (Centimeters) more accurate, you go into Mm (Millimeters). There are smaller scales of everything, it is just about how accurate you want to make it.
The details depend a lot on what you want to measure.
Never: A measurement made is always an approximation. We can get very close to being accurate with our measurements, but never fully 100% accurate. This is not the fault of the person measuring, or what tool they are using to measure with, but it is a natural law that we (anyone, even superior aliens to humans) cannot ever fully make an absolutely accurate measurement.
The error when using a stopwatch in the simple pendulum experiment can vary depending on human reaction time and precision in starting/stopping. Repeating the timing for multiple swings can help reduce random errors and provide a more accurate measurement by averaging out any inconsistencies in reaction time.
We need standard unit for measurement to make our judgement more reliable and accurate. For proper dealing, measurement should be same for everybody. Hope this helped :>
An accurate measurement is made with a pH-meter; pH-papers make only approximative determination.
In order to make an accurate measurement with a thermometer, you need to wait until its reading stops changing.
Accurate measurement in scientific experiments is crucial because it ensures the reliability and validity of the results. Precise measurements help scientists draw accurate conclusions, make informed decisions, and advance knowledge in their field. Without accurate measurements, the findings of an experiment may be flawed or misleading, leading to incorrect interpretations and potentially hindering scientific progress.
The reliability and accuracy of a measurement is heavily dependent on the precision and calibration of the measuring instrument. An instrument that is well-maintained, calibrated, and designed for the specific measurement task will generally produce more reliable and accurate results. Human error and environmental factors can also impact the reliability and accuracy of measurements, regardless of the quality of the instrument.
Impossible to say. What you have is a measurement in whole centimeters. Those are bigger than tenths of centimeters. A less accurate measurement. And you can't make a more accurate measurement out of a less accurate one. The other way is fine though. Measured with tenths, anything between 6.6 - 7.4 cm could be written as 7 cm according to the laws of rounding.
Uncertainty of measurement is important because it provides a way to understand the limitations of a measurement, allowing for a more accurate interpretation of the data. It helps to quantify the range of values within which the true value of a measurement is likely to lie. By knowing the uncertainty, decision-makers can make informed choices based on the reliability of the measurement.
Make sure you are only measuring what you are after. Not noise and local disterbances. Proper system grounding is needed. Make sure the device you are using has been calibrated periodically properly to a N.B.S. standard. Your measurement will only be accurate to 10 times the standards value. That is a 0.3% accurate standard will only give you a 3% accuracy in your measurement.