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Is the Method of drawing a portion of a population or universe so that each member of the population or universe has an equal chance to be selected |
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| Means Typical of a Population |
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| refers to taking a portion of the population or universe as representative of that population or universe |
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| There is no known law, capaable of being expressed in language that correctly describes or explains events and their outcomes |
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| Weakest form of sampling one takes available samples at hand |
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| Characterized by the use of Judgement and a deliberate effort to obtain representative samples by including presumably typical areas or groups in the sample |
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| means that the sample has spproximately the characteristics of the population relevent to the research in question |
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| A possiblity of selecting a sample with a mean not close to the population |
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| is the assignment to experimental treatments of members of a universe in a way such that, for any given assignment to a treatment, every member of the universe has an equal probabilty of chosen for that assignment. |
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| is the partioning of the universe or population into two or more mutually exclusive groups |
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| The Principle of Randomization |
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| Since in random procedures, every member of a population has an equal chance of being selected, members with certain distinguishing characteristics male or female/ high or low intelligence- will, if selected probably be offset in the long run by the selection of other members of the population with counter balancing quantities or qualities of the characteristics |
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