A student on the archery team gets all her arrows in the same spot on the target. They are all outside the bull’s eye. Which best describes her results?
A student added the measurements 36.67 g and 4.1 g. Which of the following expresses the sum with the correct number of significant figures?
Which of the following shows the mean with the correct number of significant figures for the numbers 15.6, 14.1, 7.7, 12.9, 12.9?
A student calculated the density of tin to be 7.20 g/mL. The actual density of tin is 7.29 g/mL. Which of the following is his percent error?
An estimate is an approximation of a number based on reasonable assumptions.
Accuracy refers to how close a group of measurements are to each other.
The mean is the middle number in an ordered set of data.
The median appears most often in a list of numbers.
To find percent error, you subtract the true value from the experimental value and divide by the true value.
The anomalous data in a measurement include all digits measured exactly, and one estimated digit.