shortly define Sampling With and without Replacement in statistics

Sampling With Replacement in statistics is a method where each time a sample is taken from the population, it is returned or "replaced" back into the population. This means that for each draw, the population remains the same, so a unit can be selected more than once.

On the other hand, Sampling Without Replacement is a method where each selected unit is not returned to the population, so it cannot be selected again. This means that for each draw, the population decreases, so a unit can only be selected once.