Psych 2

The total group from which a sample is drawn
Frequency Distribution
Arranging data so you know how often a score occurs
Graph that demonstrates the direction of the relationship between two variables
Random Sample
Equal chance of being represented
Stratified Sample
Representative of various subgroups of the population
The relationship between two sets of data
Correlation Coefficient
A statistic that describes the direction and strength of the relationship between two sets of data
Normal Curve
A symmetrical bell-shaped curve
Descriptive Statistics
The listing and summarizing of data in a practical way
Sampling of data obtained through interviews and questionnaires
Standard Deviation
A measure of variability that describes an average distance of every score from the mean of the scores
Experimental Group
A group of participants to whom an independent variable is applied