Match

Returning selected individuals to the population to ensure a constant probability of selection for subsequent draws.

A symmetrical, bell-shaped distribution used to determine probabilities associated with Z scores by locating them on the curve.

A standardized score indicating how many standard deviations a data point or sample mean is from the population mean.

A method of selecting from a population where every person has an equal and constant probability of being chosen.

States that the mean of sample means equals the population mean, and their distribution approximates normal for large sample sizes (n > 30).

A theoretical distribution formed by plotting the means of multiple random samples of the same size from a population.

The likelihood of something occurring beyond chance, expressed as a proportion or percentage.