A major goal of inferential statistics is to estimate the value of a parameter from the information in a sample. However, the parameter estimate is imperfect due to sampling variability. Thus, the best we can do from the information in one sample is provide a range in which the parameter is likely to be. This range is called a confidence region and is the subject of this module.

After completing this module, you should be able to ...

  1. Describe the concept underlying confidence regions.
  2. Construct confidence regions for parameters.
  3. Use the confidence interval formula to estimate desired sample sizes.

Preparation for Class

Use the materials below to answer the questions on this preparation guide.


Practice


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