Quick reminder independent & repeated (t-tests)

1. Independent samples are samples from groups that are completely separate
from one another.
A repeated sample is the same group measured more than once
Marital Status
TWO Levels Single Married
Independent Variable
Independent Samples One cannot be single and married at the same
time; therefore, a sample of singles and a sample
of marrieds are independent from one another.
Time
TWO Levels Pre-test Post-test
Independent Variable
Repeated Samples
A group of students are tested at the beginning of
the course and then tested AGAIN at the end of
the course and thus are considered repeated
samples.