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### 14 Cards in this Set

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 Validity A measure is valid if it actaully measures what it purpurts to measure Reliabilty It gives the same results again and again if the measure is repaeted. It has to do with how dependable a mirror mearues Random Error If on average the measure of a concept tend to be true, we can assume that any error encourtered is random. Independent variable Causes the dependent variable, (column) Dependent variable Influences the indpendent variable, (rows) Level of measurement The realtionship among the values that are assigned to the attributes for a variable (Party Affiliation) Alternative hypothesis Testing to see if there is a relationship between tow variable Nominal Measurement Categorical and non quantative Politcal ideology, ethnicity religion Median The middle of the spectrum, 50% is on one side and 50% is on the other. Mode Means the most frequent response Mean The average betwen two different variables. If you were to total the sum of all the variables and then divide them. Null Hypothesis There is no relationship between the variables. Ordianl measurement Rank on some dimension wih out knowing # of of options. Interval measurement measures the diffeence between respondent. aGE, YRS IN NM)