(0:00 – 0:29) Introduction; What is a random sample?
(0:30 – 1:19) Random vs. haphazard selection
(1:20 – 1:52) Why do we use random selection?
(1:53 – 2:38) Are random samples always representative?
(2:39 – 2:54) Recap
A sample that has been selected in a manner where every member of the population has some predetermined chance of being selected for the sample
The method of obtaining a random sample
The way to collect a random sample that guarantees a certain likelihood for each member of the population to be selected