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Definition
| Aspect of a testing condition that can change or take on different characteristics with different conditions |
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| Measure of a subject's behavior that reflects the independent variables effects |
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Definition
| Number of times that a behavior is performed |
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| Number of times that a behavior is performed relative to time |
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| Amount of time that a behavior lasts |
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| Amount of time between instruction and when the behavior is actually performed |
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| The shape or style of the bahavior |
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| Intensity or strength of bahavior |
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| Where the behavior occurs in the environment |
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| Condition manipulated or selected by the experimenter to determine its effect on behavior |
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Definition
| Different values of an independent variable |
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Definition
| Variable for which its role is the cause and effect of an observed relationship is not clear |
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| Difference between subjects that cannot be controlled but can only be selected |
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| One whose effect cannot be separated from the supposed independent variable |
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Definition
| One that varies in amount |
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| One that falls along a continuum and is not limited to a certain number of values |
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| One that falls into separate bins with no intermediate values possible |
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Definition
| The point indicated by a number |
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Definition
| The interval defined by the number plus or minus half the distance to the next number |
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Definition
| The process of assigning numbers to events or objects according to rules |
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Definition
| A measure that simply divides objects or events into categories according to their similarities or differences |
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| A measure that both assigns objects or events a name and arranges them in order of their magnitude |
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Definition
| A measure in which the differences between numbers are meaningful; includes both nominal ad ordinal information |
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| A measure having a meaningful zero point as well as all of the nominal, ordinal and interval properties |
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Definition
| The property of consistency of a measurement that gives the same result on different occasions |
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Definition
| The property of a measurement that tests what it is supposed to test. |
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Definition
| Variability in the dependent variable that is not associated with the independent variable |
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Definition
| A test that the measurements actually measure the constructs they are designed to measure, but no others |
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Definition
| Idea that a test should appear superficially to test what it is supposed to test |
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Definition
| Idea that a test should sample the range of behavior represented by the theoretical concept being tested. |
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| Idea that a test should correlate with other measures of the same theoretical construct |
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Definition
| Measurement error that is associated with consistent bias |
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| The degree to which the same test score would be obtained by another occasion |
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Definition
| The degree to which the various items on a test are measures of the same thing |
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Definition
| A display of data in a matrix format |
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Definition
| A representation of data by spatial relationships in a diagram |
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Definition
| A graph that shows the number of scores that fall into specific bins, or divisions of the variable |
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Definition
| Frequency distribution in which the frequencies are represented by continuous bars |
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Definition
| Frequency distribution in which the frequencies are connected by straight lines |
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Definition
| A bell shaped curve described by a certain mathematical function |
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Definition
| A distribution that is not symmetrical |
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| Cumulative frequency distribution |
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Definition
| A frequency distribution that shows the number of scores that fall at or below |
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Definition
| A graph showing the responses of number of individuals on two variables; visual display or correlational variables |
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Definition
| A division of the subjects in a study into two groups of equal size on the basis of one of the variables |
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Definition
| A graphical representation using lines to show relationships between quantitative variables |
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Definition
| Graphical representation of categorical data in which the heights of separated bars, or columns , show the relationship between variables |
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Definition
| A graph in which the abscissa (x-axis) represents time |
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| An a graph, vertical lines that indicate plus or minus one standard deviation of the data, or less frequently, the standard deviation of the mean. |
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Definition
| A type of graph based on median and percentiles rather than mean and standard deviation |
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| The process of transcribing data from individual data sheets to a summary form. |
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Definition
| A record that specifies the variables of a study, the columns they occupy in the data file, and their possible values |
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Definition
| Data points that fall outside the defined range for that variable of data |
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| Empty cells in the data matrix |
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Definition
| Data points that are highly improbable, although not impossible |
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Definition
| A symbol, such as an asterisk (*), that is entered in a cell that has no data |
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Definition
| An indication of accuracy in terms of the extend to which a research conclusion corresponds with reality |
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