Errors of indirect measurements

Let y be indirectly measured quantity, it is defined as y = f(x₁,x₂,..., x_n). x₁,x₂,..., x_n is defined as the direct measurements.

1. Errors of indirect measurements are defined as

(2.13)

if the functional dependence of investigated quantity is a polynomial.

2. Errors of indirect measurements are defined as

(2.14)

if the functional dependence of investigated quantity, is a monomial

and we can define Dy as: . For example:

1. If the functional dependence is then

Then

2. If functional dependence is ,

Then

and

The final result: .

Graph presentation of the experimental results

Graph is built on the millimeter paper. In fig.2.2 you can see an example of graph.

Figure 2.2

The experimental curve is drawn through the experimental points. This curve describes the experimental data.