STATISTICAL TECHNIQUES AND TOOLS
CONFIDENCE INTERVALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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I & II
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II & III
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I & III
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I, II, III
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I, II, III, IV
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Detailed explanation-1: -Answer: As sample size increases, the margin of error decreases. As the variability in the population increases, the margin of error increases. As the confidence level increases, the margin of error increases.
Detailed explanation-2: -In both formulas, there is an inverse relationship between the sample size and the margin of error. The larger the sample size, the smaller the margin of error. Conversely, the smaller the sample size, the larger the margin of error.
Detailed explanation-3: -Sample Size and Variability A larger sample size or lower variability will result in a tighter confidence interval with a smaller margin of error. A smaller sample size or a higher variability will result in a wider confidence interval with a larger margin of error.