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a single value estimate for a population parameter.
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a range of values used to estimate a population parameter.
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the probability that the interval estimate contains the population parameter.
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factors used to compute the margin of error; can be a z-score or a t-score
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term used in statistics that measures the probability that a population mean will fall between two set values; can take any number of probabilities, with the most common being 95% or 99%.
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expresses the maximum expected difference between the true population parameter and a sample estimate of that parameter |
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If samples of size n, where n > 30, are drawn from any population with a mean m and a standard deviation s, then the sampling distribution of sample means approximates a normal distribution with mean (mu)and standard deviation (sigma/sqrt(n))regardless of whether the original population was normally distributed or not.
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describes how [x-bar]varies in all possible samples from the population
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standard error for proportions |
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measure of the variability of a statistic; an estimate of the standard deviation of a sampling distribution;
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standard deviation for means |
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a numerical value used to indicate how widely individuals in a group vary
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