STATISTICAL TECHNIQUES AND TOOLS
CONFIDENCE INTERVALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True or False:The larger your confidence interval is, the more sure (higher confidence level) you can be.
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True
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False
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -The greater the confidence level, the wider the confidence interval. If we assume the confidence level is fixed, the only way to obtain more precise population estimates is to minimize sampling error.
Detailed explanation-2: -Wider confidence intervals in relation to the estimate itself indicate instability. For example, if 5 percent of voters are undecided, but the margin of error of your survey is plus or minus 3.5 percent, then the estimate is relatively unstable.
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