Bootstrap confidence intervals for the standard deviation.
Chapter , Problem 16.48(choose chapter or problem)
Bootstrap confidence intervals for the standard deviation. We would like a 95% confidence interval for the standard deviation s of 150 GPAs. In Exercise 16.27 (page 16-23) we considered the bootstrap t interval. Now we have a more accurate method. Bootstrap s and report all three 16.4 Bootstrap Confidence Intervals 16-41 95% bootstrap confidence intervals: t, percentile, and BCa. Make a graphical comparison by drawing a vertical line at the original s and displaying the three intervals vertically, one above the other. Discuss what you see: Do bootstrap t and percentile agree? Does the more accurate interval agree with the two simpler methods? What interval would you use in a report on GPAs at this college?
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