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### 22 Cards in this Set

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 Variable Anything that may take on different values or amounts. Independant Variable Variable controlled and manipulated by the experimenter. Dependent Variable Measurement of behavior. Population Complete colection of anything. Paramater Measurable characteristic of a popualtion. Sample A subset of the population. Statistic Measurable characteristic of a sample. Sampling Process of selecting a sample from the population. Random Sampling Method in which each member of a population has an equal chance of being selected. Stratified Random Sampling Population is divided into groups, and random samples are taken from each group. Measurement Assignent of numbers or labels to objects or events. Nominal Scale Assigns a name or label to different objects or events. Ordinal Scale Identify and rank-order each object or event. Interval Scale Identify and rank-order each object or event, each unit assumed to be equal to each other. Ratio Scale Identify and rank-order each object or event, each unit assumed to be equal to each other, has a true "0". Measurement Data Data involiving a true measurement process. Frequency Data Data consisting of counts, totals, or frequencies. Descriptive Statistics Tools used to describe or illistrate data. Ex - GPA, graphs Interential Statistics Allows us to make conclusions about a larger group based on a subset of it and tell us how confident we are in out conclusions. Biased Not representive of the population Scales of Measurment Rules used for assigning numbers Measurment data Data from some kind of true measurement processes