2-3 Flashcards
The listing and summarizing of data in a principal, efficient way
Descriptive statistics
The branch of mathematics concerned with summarizing and making meaningful inferences from collections of data
Statistics
An arrangement of data that indicates how often a particular score or observation occurs
Frequency distribution
A graph of frequency distribution shaped like a symmetrical, bell shaped curve, a graph of normally distributed data
Normal curve
A number that describes something about the average score of a distribution
Central tendency
A measure of difference or spread of data
Variability
A measure of variability that describes an average distance of every score from the mean
Standard deviation
Describes the direction and strength of the relationship between two sets of variables
Correlation coefficient
Numerical methods used to determine whether research data support a hypothesis or whether results were due to chance
Inferential statistics