Question

The following length measurements were taken by students using several different measuring devices. Find
the average of the measurements. Make sure that your answer has the correct number of significant figures.
10.05 cm, 10.1 cm, 9.741 cm, 10.6 cm, 10.5 cm

Answer 1

To find the average of all listed measurements, find the sum of all and divide that answer by the total number of factors. In this case, you're working with 5 factors aka 5 different length measurements.

(10.05 + 10.1 + 9.741 + 10.6 + 10.5) / 5 = 10.1982

When adding or subtracting, the result SHOULD have the same amount of decimal places as the factor with the fewest amount of decimal places. The factor with the smallest amount of decimal places is 3, therefore your answer should be: 10.1.

The average measurement, considering significant figures, is 10.1

Answer 2

I forgot to round this! The average is 10.2, not 10.1. Remember to round your answer after determining the correct amount of significant figures