Prerequisites: Reviewing Measurement

Self-Check icon Reviewing Measurements Self Check 1

Now, you try. Complete the self-check activity by looking at the questions below, working them out, and then clicking on the question to review the solution.

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What is the length of this paper clip?paperclip
The paper clip measures approximately 3.3 cm.

 

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What is the precision of the measurement?
± 0.1 cm

 

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What is the percent uncertainty in the measurement?
one tenth divided by 3 and 3 tenths, times 100 equals 3 percent

 

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If the actual measurement was 3.2, what is the percent error in the measurement?
the numerator 3 and 3 tenths minus 3 and 2 tenths over the denominator 3 and 2 tenths all times one hundred equals three percent

 

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How many significant figures are there in this measurement?
2