Video: Confidence Intervals from Bootstrap Resampling [8 min]
We introduce bootstrap resampling and construct confidence intervals using resampling error, which we can see, in place of sampling error, which we cannot see.
After you’ve watched this video, you should be able to answer these questions:
- What is bootstrap re-sampling? How do we generate a bootstrap-resample?
- What would happen if we took our re-samples using the ordinary way of sampling (without replacement)?
- What do we notice from the animations shown about bootstrap re-sampling error and sampling error?
- Why don’t we just use sampling error to make our confidence intervals? What do we do instead?
- Does the development in this video demonstrate that bootstrap confidence intervals will work as a way of addressing the “how wrong could we be” problem?
If you couldn’t answer a question, you might find it helpful to look at the Illustrated transcript.
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