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### 14 Cards in this Set

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 The value of the estimator approaches the value of the ____ as the sample size increases. Parameter The absolute difference between a parameter and its point estimator: Sampling error A range of values within which the population parameter is expected to occur: Confidence interval What are the 3 point estimates? 1) xbar (quantitative) 2) s 3) pbar (qualitative) Symbol in calculator for the point estimate of a population mean: xbar What happens to the t distribution as the degrees of freedom increase? The t distribution approaches the standard normal distribution. How do you calculate the margin of error? Za/2(sigma/sqrt n) Ta/2(sigma/sqrt n) What are the 3 point estimators? 1) mu (quantitative) 2) sigma 3) p (qualitative) Symbol in calculator for the point estimate of a population standard deviation: Sx How do you calculate an interval estimate? Point estimate + Margin of Error Point estimate - Margin of Error When estimating the population mean with a small sample, the t distribution may be used with ______ degrees of freedom. n-1 A confidence interval ____ in width as the sample size is increased. Decreases Unknown Population Standard Deviation and a Small Sample 1-SampTInterval The _____ is more spread out and flatter at the center than is the standard normal distribution. t distribution