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The purpose of the R data package mmdata is to store datasets from the beloved econometrics textbook Mastering 'Metrics.
# install.packages("devtools") devtools::install_github("jjchern/mmdata")
library(mmdata) ls("package:mmdata", all = TRUE) #> [1] "banks" "child_labor_law" #> [3] "dd_mlda" "hs_diploma" #> [5] "mdve" "nhis2009" #> [7] "qob" "rand_hie_annual_spend" #> [9] "rand_hie_initial_sample" "rand_hie_person_years" #> [11] "rd_mlda" "twins"
library(tibble) mmdata::qob #> Source: local data frame [329,509 x 5] #> #> lnw s yob qob sob #> <dbl> <dbl> <dbl> <dbl> <dbl> #> 1 5.790019 12 30 1 45 #> 2 5.952494 11 30 1 45 #> 3 5.315949 12 30 1 45 #> 4 5.595926 12 30 1 45 #> 5 6.068915 12 30 1 37 #> 6 5.793871 11 30 1 45 #> 7 6.389161 11 30 1 36 #> 8 6.047781 12 30 1 51 #> 9 5.354861 11 30 1 45 #> 10 5.259597 7 30 1 45 #> .. ... ... ... ... ...