Physics
posted by Physics .
when trying to find uncertanty percent error and your given the number  15 s^2 m with a implied uncertanty of +/ 1 s^2 m and you try to find the percent uncertanty and you do this
( 15 s^2 m)^1 1 s^2 m (100 %) is the percent negative or positve
also when trying to find the average percent uncertanty of your data do you count that number as positive or negetive when you find the average by finding the mean?

In the example you mentioned, the relative uncertainty is +/ 1/15 = +/ 6.7%
I am not sure what you mean by your second question. When you make a series of measurements of something that should be a constant, the most probable value is the mean, unless there are systematic bias errors. Errors due to nonrepeatability are expressed as +/ about the mean in most cases. The error value can be estimated from the standard deviation, which is the square root of the average squared deviation from the mean.
Respond to this Question
Similar Questions

Propagating error
Find the absolute and percent relative error for each calc. b) 81.5 (+/ 0.5) x 40.2 (+/ 0.2)/ 21.8 (+/ 0.2) my answer for absolute error was 150. +/ 200, which is outrageous. Can someone show how they would do it so I can compare … 
Earth Science
A student finds the density of an ice cube to be 0.80g/cm3; it is actually 0.90 g/cm3. What is the percent deviation (percent error) in this calculation? 
the percent equation
1. find 30% 0f 70 2 what is 80% of 65 3 what percent of 56 is 14 4 36 is what percent of 40 5 80 is 40% of what number? 
math
A bond has an average return of 6.8 percent and a standard deviation of 4.6 percent. What range of returns would you expect to see 68 percent of the time? 
College Physics
If the uncertanty in the slope is 1.214×1014, is the measured value of ε0 within experimental uncertainty of the accepted value? 
Chemistry
Do you need to do uncertainties on percent error? 
Chemistry
To calculate the percent error you would use the error in measurement divided by accepted value times 100 correct? 
alg 1
Find the percent error in calculating the volume of the prism. V=(bw)(h) v=11 x 8 (7) V=616 my choices were: 19% 10% 119% 83% I'm not sure what it means to find the percent error. Please explain. Thanks. 
Statistics
given the following information, determine the 68.3 percent, 95.5 percent, and 99.7 percent confidence intervals. Mean = 4.33, standard error of the mean =3 
Percent error math
Julian's measurement was 105 percent of 50 pounds and Amanda's measurement was 95 percent of 50 pounds. How many pound off were each?