- #1

pinsky

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## Homework Statement

Students measured an object 5 times, and got the results 11,25 cm, 11,20 cm, 11,22 cm, 11,18 cm i 11,25 cm. The height of this object is:

A. h = (11,22 ± 0,03) cm

B. h = (11,22 ± 0,04) cm

C. h = (11,25 ± 0,07) cm

D. h = (11,25 ± 0,03) cm

## Homework Equations

Standard deviation and average value formulas.

## The Attempt at a Solution

I calculated the average value (11.22) and the standard deviation (0.03), so the answer should be A. But in the book, B is the correct answer. Am I missing something here?

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