0
The smallest possible burette reading is 0.10 and the uncertainty of a burette's reading is half of its smallest value (0.05).
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
What is the relative dispersion with the mean of 45000 and a standard deviation of 9000?
Relative dispersion = coefficient of variation = (9000/45000)(100) = 20.
What does relative standard deviation of 0.003 mean?
The relative standard deviation is the absolute value of the ration of the sample mean to the sample standard deviation. This value appears to be quite small; however, without comparative data it is difficult to know what to make of it. In some contexts it might even be considered large.
What is the uncertainty of 1.93cm?
That is a statement of a fixed length. There is no uncertainty about that.
When do you use the relative standard deviation instead of standard deviation?
Use %RSD when comparing the deviation for popolations with different means. Use SD to compare data with the same mean.
Why do you need to calculate standard deviation and relative error?
to ensure your experiment is precise and to prevent error to happen during experiment
How can I find the uncertainty when a constant is divided by a value with an uncertainty?
Add up the relative uncertainties of both constant and of the divider
What does uncertainty mean?
In science, uncertainty refers to the precision of your measurements. No matter what instrument you use the last figure you write down is the figure with the uncertainty. A burette is carefully manufactured to measure volume but the manufacture knows that there will be some uncertainty - the burette can be read with confidence to with in 0.1 mL. That means that the volume reading 25.3 ± 0.1 mL is correct. When a calculation is done with this volume the uncertainty is converted to a percentage uncertainty. The scientist understands that every measurement has some uncertainty in it and this uncertainty is contained in any answer. When the answer is written down it must take account of the uncertainty of the measurements. When calculating the calculator may have 8 figures in the answer but these figures are meaningless if the the starting figures were uncertain after the 3rd figure.I'm not entirely certain.
How do you find the relative uncertainty in the mass of the electron?
The mass of the electron is 9,109 383 56(11)×10e-31 kg.The uncertainty is +/-11 for the last two decimals.
Suggestions for percent error R gas constant?
The molar gas constant (R), expreseed in J/mol.K, has a value (after IUPAP and IUPAC tables) of 8,314 472 ± 0,000 015. The relative standard uncertainty is 1,70.
Is the standard error of the sample mean assesses the uncertainty or error of estimation?
yes
Is a burette the best tool to measure acid?
Yes, a burette is the best tool for measuring acidYes, a burette is the best tool for measuring acid
What instruments holds the burette?
A ring clamp is used to hold a burette.
What is the pupose of a burette?
A burette is used to very accurately measure liquid volumes.
Which is most accurate burette beaker measuring cylinder and volumetric flask?
burette
How do you clean pipette?
First remove all the solid particles from the burette using a scrubber. Then wash the burette with tap water followed by distilled water thoroughly (even the nozzle). Then wash the burette with the solution to be used in the burette.
Is relative standard deviation an absolute value?
No, as its name suggests, it is a relative measure.
A length is quoted as 2.4 mm. What is the percentage relative uncertainty implied by this number?
Approx. 4 %.
