Find the percent diffidence by comparing it with the given  Instructor’s average value of ten trials is 3.95cm.

Table: 1

Trial	Measurement (cm)	Deviation from average (cm)	Deviation squared (cm)2
1	3.90
2	3.95
3	3.96
4	3.85
5	3.90
6	4.00
7	3.90
8	3.95
9	3.85
N=10	4.00

Find the Standard deviation, s  

   =       

The measured value is given by   =                  

Answer rating: 100% (QA)

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