Populations and Samples Flashcards
(8 cards)
1
Q
What is a population?
A
A collection of individual items.
2
Q
What is a sample?
A
A selection of individual members or items from a population.
3
Q
What defines a finite population?
A
Every individual member could be given a number.
4
Q
What defines an infinite population?
A
It is impossible to number each individual number.
5
Q
What is a sampling unit?
A
An individual member of a population.
6
Q
What is a sampling frame?
A
A list of sampling units used in practice to represent a population.
7
Q
What is a statistic?
A
A quantity calculated solely from the observations in a sample.
8
Q
What defines a sampling distribution?
A
A sampling has a sampling distribution that is defined by giving all possible values of the statistic and the probability of each occurring.
