Term
Science (Define and name four reasons why it is important) 

Definition
“A systematic method for the acquisition of knowledge”
 Objective  Controlled observations  Replicable  Contributes to theory building  Databased  Agreed upon vocabulary (Operational Definitions) 


Term

Definition
Systematic process of collecting and logically analyzing information for some purpose 


Term

Definition
"Methods used to summarize, analyze, or make inferences from data" 


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Definition
quantifiable information gathered through measurement or observation of behavior or events (controlled; objective; replicable?). 


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Definition


Term

Definition
show relationships between variables 


Term

Definition
make inferences about population or sample 


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Definition
"empirical, observational, archival, anecdotal" 


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Definition
the total set of individuals of interest 


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Definition
set of individuals selected from the population of interest (Subjects; Participants) 


Term
Six Types of Sampling Plans 

Definition
"Random, Stratified Random, Volunteers, Convenience, Purposive, Systematic" 


Term
What are the key to making generalizations about the population? 

Definition
representation and sample size 


Term

Definition
"ÒA characteristic, influence, or condition that can take on different values at different times, in different contexts, or for different people" 


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Definition
variables that are manipulated 


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Definition
variables that measured or observed for change 


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Definition
"variables that effect outcome, but not intended for study (threats to validity)" 


Term

Definition
"one that consists of separate, indivisible categories; no values exist between data points (age in years)" 


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Definition
"one that has an infinite number of possible values(e.g., age in general   divisible to into days, hours, minutes, seconds)." 


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Definition
"A characteristic that does not change, but is the same for every individual." 


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Definition
"An exploratory question of interest (e.g., I wonder whether there is a relationship between these variables)" 


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Definition
A prediction about the relationship between variables. 


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Definition
prediction of no relationship 


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Definition
prediction of a specific relationship 


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Definition
"Hypothetical concepts used in theories to organize observations (e.g., intelligence, selfconcept)" 


Term
characteristics of Nominal Scale 

Definition
Data categories are mutually exclusive (can only belong to one category) 


Term
characteristics of Ordinal Scale 

Definition
Data categories are mutually exclusive, have some logical order (1st, 2nd, 3rd) and are scaled according to amount of characteristic. 


Term
characteristics of Interval (Equal Unit Scale) 

Definition
Data categories are mutually exclusive, have a logical order, are scaled according to amount of characteristic they possess. Equal differences in the characteristic is represented by equal differences in numbers assigned. No absolute zero. 


Term

Definition
Data categories are mutually exclusive, have a logical order, are scaled according to amount of characteristic they possess. Absolute zero. Equal differences in the characteristic is represented by equal differences in numbers assigned. 


Term
Characteristics of normal curve 

Definition
"bellshaped, symmetrical, asymptotic, continuous" 


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Definition


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Skewness of Mean > Median > Mode 

Definition


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Skewness of Mean < Median < Mode 

Definition


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Definition
"positive kurtosis, peaked distribution" 


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Definition
"kurtosis is 0, has the slope of a normal curve" 


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Definition
flat/broad distruction with more extreme scores than normal and the remaining scores more evenly distributed than normal 


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Definition
"A statistic that identifies a single score that represents the typical performance of a population (mean, median, mode)" 


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Definition


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Definition
"Midpoint of frequency distribution, 50th percentile" 


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Definition
most frequently occuring case 

