{"part":"task","text":"# Datasets\nPass a dataset's id as the `dataset` argument.\n{\n \"id\": \"asciiqob\",\n \"rows\": 329509,\n \"description\": \"Joshua Angrist's minimal extract of the 1980 Census used by Angrist and Krueger (1991), 'Does Compulsory School Attendance Affect Schooling and Earnings?' (asciiqob.txt in asciiqob.zip): one row per man born in the United States in 1930-1939, from the 5 percent public-use sample of the 1980 Census (329,509 rows). Columns: lwklywge, the log of weekly earnings in 1979; educ, years of education; yob, year of birth (30 for 1930 to 39 for 1939); qob, quarter of birth (1 to 4); pob, state of birth (census code). Added by the declared transforms: yob_30 to yob_39, one indicator per year of birth; qtr_1 to qtr_4, one indicator per quarter of birth; and qtr1_yob30 to qtr3_yob39, thirty columns, each the product of the indicator for quarter of birth 1, 2 or 3 and the indicator for one year of birth (qtr2_yob35 is 1 for men born in the second quarter of 1935).\",\n \"columns\": {\n  \"lwklywge\": \"float64\",\n  \"educ\": \"int64\",\n  \"yob\": \"int64\",\n  \"qob\": \"int64\",\n  \"pob\": \"int64\",\n  \"yob_30\": \"int64\",\n  \"yob_31\": \"int64\",\n  \"yob_32\": \"int64\",\n  \"yob_33\": \"int64\",\n  \"yob_34\": \"int64\",\n  \"yob_35\": \"int64\",\n  \"yob_36\": \"int64\",\n  \"yob_37\": \"int64\",\n  \"yob_38\": \"int64\",\n  \"yob_39\": \"int64\",\n  \"qtr_1\": \"int64\",\n  \"qtr_2\": \"int64\",\n  \"qtr_3\": \"int64\",\n  \"qtr_4\": \"int64\",\n  \"qtr1_yob30\": \"int64\",\n  \"qtr1_yob31\": \"int64\",\n  \"qtr1_yob32\": \"int64\",\n  \"qtr1_yob33\": \"int64\",\n  \"qtr1_yob34\": \"int64\",\n  \"qtr1_yob35\": \"int64\",\n  \"qtr1_yob36\": \"int64\",\n  \"qtr1_yob37\": \"int64\",\n  \"qtr1_yob38\": \"int64\",\n  \"qtr1_yob39\": \"int64\",\n  \"qtr2_yob30\": \"int64\",\n  \"qtr2_yob31\": \"int64\",\n  \"qtr2_yob32\": \"int64\",\n  \"qtr2_yob33\": \"int64\",\n  \"qtr2_yob34\": \"int64\",\n  \"qtr2_yob35\": \"int64\",\n  \"qtr2_yob36\": \"int64\",\n  \"qtr2_yob37\": \"int64\",\n  \"qtr2_yob38\": \"int64\",\n  \"qtr2_yob39\": \"int64\",\n  \"qtr3_yob30\": \"int64\",\n  \"qtr3_yob31\": \"int64\",\n  \"qtr3_yob32\": \"int64\",\n  \"qtr3_yob33\": \"int64\",\n  \"qtr3_yob34\": \"int64\",\n  \"qtr3_yob35\": \"int64\",\n  \"qtr3_yob36\": \"int64\",\n  \"qtr3_yob37\": \"int64\",\n  \"qtr3_yob38\": \"int64\",\n  \"qtr3_yob39\": \"int64\"\n }\n}"}