Test 1 Flashcards
Associational (correlational) Validity
The claim of validity based on the measure being correlated with other measures
Conceptual Definition
Dictionary definition of an attribute
Bivariate Statistics
Statistics that analyze the relationship between two variables
Consensual Validity
The claim of validity based on expert agreement
Dependent Variable
The effect to be explained
Face Validity
The claim of validity based on logical evaluation
Descriptive Statistics
The numerical characteristics of a full population
Dichotomous Variable
A variable with only two possible values
Independent Variable
The hypothesized cause of the effect
Hypothesis
The statement of the relationship between the dependent and independent variables
Inferential Statistics
Analysis that allows you to generalize from a sample to a population
Interval Variable
Data that have both order & a uniformly sized scale
Nominal Variable
Data that have no order or scale; only categories
Operational Definition
The way a concept is measured
Ordinal Variable
Data that has order, but not a uniform scale
Outlier
A case that has a value far from the others in the distribution
Range
The number given by subtracting the lowest value of an attribute from the highest
Ratio Variable
Data that has order, a uniformly sized scale, and an absolute zero
Reliability
The degree to which a measure yields consistent results
Unit of Analysis
The individuals being identified in order to study their attributes; “case”
Univariate Statistics
Statistics that analyze a single variable
Validity
The degree to which a measure corresponds with its concept
Variable
A characteristic that varies when measured for different cases
Variance
The average squared distance from the mean
Bimodal Distribution
Two numbers with the same frequency
Multimodal Distribution
More than one mode
Unimodal Distribution
one clear peak
