Observing people or things in their natural habitat
Naturalistic Observation
Observe participants over a long period of time
Longitudinal Study
what the investigator is manipulating
Independent Variable
what is measured
Dependent Variable
Making vague explanations less vague
Operational Definition
Describes relationships
Positive Correlation
Measures data
Normal Bell Curve
The number in the middle
Median
Number that appears the most
Mode
The average
Mean