How to measure the volume and uncertainty of metal cylinder in college physics experiment

First, calculate the average value of each group of data, class A uncertainty and class B uncertainty.

There is a formula for the value of class A uncertainty, and class B is the minimum division of measuring tool divided by root number three. The default error is not emphasized here, and then the degree of freedom of each group of data is calculated according to the calculated uncertainty.

According to the degree of freedom of the sub-data, the degree of freedom of the indirect measurement volume is calculated, the confidence coefficient under a certain confidence probability is obtained by looking up the table, and the expanded uncertainty of the indirect measurement volume is calculated by multiplying the confidence coefficient by the composite uncertainty.

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