The diagram (right) shows the basic parts of the modern plough: 1  beam. 2  hitch (Brit: hake) 3  vertical regulator. 4  coulter (knife coulter pictured, but disk coulter common) 5  chisel (foreshare) 6  share (mainshare) 7  mouldboard.
Non-probability sampling is a type of sampling technique whereby all the units of a population do not have an equal chance of being selected in the sample.
NON-STATISTICAL SAMPLING GUIDELINES. Transaction sampling is the method to use when the sampling unit is a line item or an. individual invoice. This method allows for selected transactions to be dispersed throughout the. audit period, which allows for a more representative sample. This is the preferred method of.