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7 Cards in this Set
- Front
- Back
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Point Estimate
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-specific numerical value estimate of a parameter -the best is the sample mean |
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Proportion
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-represents a part of a whole
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Relatively Efficient Estimator |
-has the smallest variance
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Robust
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-distribution of the variable can depart somewhat from normality and valid conclusions can still be made |
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T Distribution
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-bell-shaped -symmetric about the mean -mean, median, and mode equal 0 -curve approaches but never touches x axis -variance is greater than 1 -as sample size increases, it approaches the standard normal distribution |
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Unbiased Estimator
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-the expected value of mean of the estimates obtained from samples of equal size from the parameter
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