Random sampling and Spot check

Random sampling noun - The selection of a random sample; each element of the population has an equal chance of been selected.

Spot check and random sampling are semantically related In some cases you can use "Spot check" instead a noun phrase "Random sampling".

Spot check noun - A check on work performance or product quality made at random times without warning.

Random sampling and spot check are semantically related in random examination topic. You can use "Random sampling" instead a noun phrase "Spot check".