Physics, 08.02.2021 02:00 costel8532

A student measures the width of an object several times and records the following data: 2.3 cm, 2.4 cm, 2.2 cm, 2.3 cm, 2.3 cm, 2.2 cm, and 2.8 cm. He decides to represent his data the following way:
2.3 + 2.4 + 2.2 + 2.3 + 2.3 + 2.2 + 2.8 = 16.5
16.5 ÷ 7 = 2.357 cm
(2.8 – 2.2) ÷ 2 = 0.3 cm
Therefore, the average value is 2.4 ± 0.3 cm. A teacher tells the student that his report should read 2.3 ± 0.1 cm.
How did the teacher get this result and what type of error did the student commit?

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A student measures the width of an object several times and records the following data: 2.3 cm, 2.4...