STAT 1450 Lecture 18: Chapter 18 Notes - Inference in Practice
17 Sep 2020
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Document Summary
Connecting chapter 18 to our current knowledge of statistics. Chapter 16 equipped you with the basic tools for confidence interval construction. Chapter 17 equipped you with the basic tools for conducting tests of significance. Chapter 18 addresses some of the nuances associated with inference (from chapters 16 & 17). 18. 1 conditions for inference (in practice) (cid:120) ______________________: If not, was it a randomized experiment? (cid:120) ____________________________: Is the population of interest at least 20 times the sample size? (cid:120) ________________________________: Be sure to look at the shape of the distribution and see whether any outliers are present. The margin of error covers only sampling errors. Undercoverage, nonresponse, or other biases are not reflected in margins of error. The source of the data is of utmost importance. Consider the details of a study before completely trusting a confidence interval. Example: many parents elicit the use of various software and passwords to monitor the ways children use their computers.
