Lucky dip and Random sampling

Lucky dip noun - A selection or decision purely at random.

Random sampling and lucky dip are semantically related. In some cases you can use "Random sampling" instead a noun phrase "Lucky dip".

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

Lucky dip and random sampling are semantically related. Sometimes you can replace phrase "Lucky dip" with "Random sampling", this phrases are similar.