# Shared Flashcard Set

## Details

Psychology Statistics
Vocab
22
Psychology
03/21/2011

Term
 parameter
Definition
 term used to describe characteristics of a population
Term
 statistic
Definition
 term used to describe characteristics of a sample
Term
 population
Definition
 The entire group of individuals we are interested in studying
Term
 sample
Definition
 The subset of individuals in the population that we actually study
Term
 nominal
Definition
 Represents differences between individuals
Term
 ordinal
Definition
 Represents differences between individualsIndicates order of individuals
Term
 Interval
Definition
 Represents differences between individuals Indicates order of individuals Intervals between values are equal
Term
 Ratio
Definition
 Represents differences between individuals Indicates order of individuals Intervals between values are equal A true zero point exists
Term
 data
Definition
 multiple measurements or observations
Term
 data set
Definition
 a collection of measurements or observations
Term
 datum / data point / score
Definition
 a single measurement or observations
Term
 sampling error
Definition
 the difference between a statistic and its corresponding parameter
Term
 descriptive statistics
Definition
 statistical procedures that summarize, organize, and simplify data
Term
 inferential statistics
Definition
 techniques that allow us to generalize results from samples to populations
Term
 variables
Definition
 characteristics or conditions that change or take on different values
Term
 independent variables
Definition
 variables manipulated by the experimenter
Term
 dependent variables
Definition
 variables that are observed or measured
Term
 discrete variables
Definition
 separate, indivisible categories(ex: months, political parties, psychological disorders)
Term
 continuous variables
Definition
 divisible into an infinite number of parts(ex: age, time, length)
Term
 real limits
Definition
 Boundaries that separate intervals on a continuous variable
Term
 N and n
Definition
 N = number of individuals in the populationn = number of individuals in a sample
Term
 Sum of scores = ∑ X
Definition
 X=1592108∑X=1+5+9+2+1+0+8
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