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11 Cards in this Set
- Front
- Back
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tobt
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indicates the location of sample on the sampling distribution of means we sampling from a raw score population.
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tcrit
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critical value that marks the region of rejection
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df for a one-sample t-test
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df = N-1
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confidence interval
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describes a range of mews, any one of which the sample mean is likely to represent. Confidence that the interval contains the mew equals (1-alpha) (100)
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degrees of freedom
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number of scores that are free to vary
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estimated standard error of the mean
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an estimate of the standard deviation of the sampling distribution of means, used in calculating the one-sample t-test; symbolized by sXw
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interval estimation
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A way to estimate a population parameter by describing an interval within which the population parameter is expected to fall
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one-sample t-test
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The parametric procedure used to test the null hypothesis for a one-sample experiment when the standard deviation of the raw score population must be estimated
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point estimation
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A way to estimate a population parameter by describing a point on the variable at which the population parameter is expected to fall
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t-distribution
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The sampling distribution of all possible values of t that occur when samples of a particular size are selected from the raw score population described by the null hypothesis
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What are the assumptions of the t-test?
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1) There is a one-sample experiment using INTERVAL or RATIO scores.
2) The raw score population forms a NORMAL DISTRIBUTION 3) The variability of the raw score population is estimated from the sample. |
