Random sampling is a statistical method used to select a sample of data from a larger population. It involves selecting a sample of data from the population in a way that each member of the population has an equal chance of being selected. Polling is a type of random sampling where a sample of people are asked questions about their opinions or beliefs. Spotchecking is a form of random sampling where a sample of items are inspected to determine if they meet certain criteria. Spotchecking involves inspecting a sample of items from a larger population to ensure that they meet certain standards.