[ad_1] https://i.ytimg.com/vi/STGGniMV0jg/hqdefault.jpg Bootstrapping uses the observed data to simulate resampling from the population. This produces a large number of bootstrap resamples. We can calculate a statistic for each bootstrap resample and use the distribution of the simulated statistics to approximate characteristics of the population. This video lays the foundation for later bootstrap videos. Original source