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These errata are in the print version. They have been corrected in the online version.
## Chapter 2
The word **broad** not **board** should be in the following sentence. "If we are looking at more **broad** populations of interest, like all adults in the United States, the sampling frame is likely imperfect."
## Appendix A.3 {-}
Stata files have the extension of `.dta`. There are a few instances of using the function `read_dat()` instead of `read_dta()` on Page 315.