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Chapter 9
Estimation and Confidence Intervals
10
Other
Undergraduate 2
10/24/2011

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Term
Point Estimates
Definition
A single value (point) derived from a sample and used to estimate a population value
Term
Confidence Interval
Definition
A more informative approach is to present a range of values in which we expect the population parameter to occur. Such a range of values is called...
Term
Point Estimate
Definition
The statistic, computed from sample information, which is used to estimate the population parameter
Term
Confidence Interval
Definition
A range of values constructed from sample data so that the population parameter is likely to occur within that range at a specified probability. The specified probability is called the level of confidence.
Term
95 percent confidence & 99 percent confidence interval
Definition
Intervals computed in the standard error fashion are called...
Term
Proportion
Definition
the fraction, ratio, or percent indicating the part of the sample or population having a particular trait of interest
Term
Finite-population correction factor
Definition
If we are determining the confidence interval for a proportion, then we need to adjust the standard error of the proportion in formula. This adjustment is called...
Term
Choosing an Appropriate Sample Size
Definition
Use a comparable study
Term
Choosing an Appropriate Sample Size
Definition
Use a range-based approach
Term
Choosing an Appropriate Sample Size
Definition
Conduct a pilot study
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