In cynthia's physics class, she must turn in four lab reports. for each report, she earns extra credit if her percent error is less than 5%.
for her second lab report, she calculated the height of a building four times. she got the following four heights.
6.8 m
7.5 m
8.1 m
7.8 m
the true height of the building is 7 m.
what was cynthia's percent error?
remember: take the average of the three measurements before calculating the percent error.
about 8%
about 7%
about 6%
about 5%