5. Sampling mode

There are two types of sampling methods:

• 100% withholding tax ;

• sampling.

The 100% sampling corresponds to the examination of the entire population. This principle is recommended for pre-series.

Sampling involves selecting a part of the population. Since sampling means that the control is not 100%, the question is how representative the observed data is of what should have been observed.

A sample consists of one or more units taken from a population and intended to provide information about it. Sampling may or may not be spread out over time (sampling frequency). The larger the sample size, or the more frequently samples are taken, the greater the efficiency. The control cards will then quickly point out any problems....