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Exercise

SE method - bootstrap CI for slope

The twins study was used to weigh in on the question of whether IQ is a result of nature (your genes) or nurture (your environment). If IQ was purely a result of nature, what slope would you expect to see in your linear model?

Recall that one way to create a confidence interval for a statistic is to calculate the statistic repeatedly under different bootstrap samples and to find the standard deviation associated with the bootstrapped statistics.

The twins data is already loaded in your workspace.

Instructions

100 XP
  • As with the previous exercise, use the infer steps on the twins data to specify a Foster vs. Biological model, generate 1000 bootstrapped replicates, and calculate the slope statistic.
  • Calculate the confidence interval of stat as the mean plus or minus two standard deviations.