Reading Questions Answer Checker
To check your answers put them in the appropriate box and click the 'Check' button. Every checker box can do arithmetic and calculate standard functions (see calculator help). If you give decimal answers, give them to at least 3 decimal places.
As you work you should have pencil and paper handy for calculations and thinking!
Note: some questions ask for a formula. For the checker we ask you to plug a value into the formula. For your pset you still need to give the whole formula.
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Problem 1.
If the original data has points then a bootstrap sample should have:Fewer points than the original because there is less information in the sample than in the underlying distribution.
The same number of points as the original because we want the bootstrap statistic to mimic the statistic on the original data.
Many more points than the original because we have the computing power to handle a lot of data.
Problem 2.
True or false: it is important to verify the assumption that the data is normal before running the parametric bootstrap.True
False
Problem 3.
True or false: the bootstrap is only effective if we know the sampling distribution for the statistic being used as an estimator.True
False
Problem 4.
True or false: the bootstrap percentile method is not as robust as the bootstrap using differences.True
False