Term
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Definition
| Two samples were the individuals or objects in the first sample are selected independently from those in the second sample. |
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Term
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Definition
| Two samples for which each observation in one sample is paired in a meaningful way with a particular observation in a second sample. |
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Term
| t= (x1-x2) - hyp. value / Sq root of (s1/n1) + (s2/n2) |
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Definition
| The test statistic for testing Ho: u1-u2 = hyp. value when the samples are independently selected and the sample sizes are large or it is reasonable to assume that both population distributions are normal. |
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Term
| (x bar1 - x bar2) +- (t critcal value) Sq root of (s1/n1) + (s2/n2) |
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Definition
| A formula for constructing a confidence interval for p1-p2 when the samples are independently selected and the sample sizes are large or it is reasonable to assume that the population distributions are normal. |
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Term
| df= (V1+V2)squared // Vsquared1/n1-1 + Vsquared2/n2-1 |
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Definition
| The formula for determining df for the two-sample t test and confidence interval. |
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Term
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Definition
| The sample mean difference |
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Term
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Definition
| The standard deviation of the sample differences. |
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Term
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Definition
| The mean value for the population of differences. |
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Term
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Definition
| The standard deviation for the population of differences. |
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