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| Papers reporting on original research. |
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| reviews the primary literature in one way or another. |
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| Wi represents the number of scores in each sample as a proportion of the total number of scores across all studies. |
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| Computing means when n is different |
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| you must compute the means as weighted sums. |
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| Mean of mean based on weighted |
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| Means calculated by weighted sum will be closer to u than M. |
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| compensates for the bias. |
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| all samples that are drawn from the sample population of scores. |
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-permits the possibility that samples were drawn from different population of scores.
-a distribution of population means. |
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| the mean of the distribution of population means. |
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| place a confidence interval around u meta and if the hypothesis falls within the interval, you retain it. If it falls outside the interval, you reject it. |
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