RaayGunz/census-earners-clean

Census Earners (Cleaned)

A cleaned subset of the openintro/census dataset (a random sample of the 2000 U.S. Census), sourced via Vincent Arel-Bundock's Rdatasets collection.

Cleaning steps

• Started from 500 rows, 9 columns.
• Removed 108 rows where total_personal_income was null — confirmed via age check to be children (ages 0-14, median age 6), for whom personal income is not applicable.
• Removed 52 working-age adults (ages 15-87) with total_personal_income equal to 0 — mostly supported by household income, kept out to preserve a clean positive-income target.
• Median-filled 11 remaining total_family_income nulls (genuinely unknown for real earners). Median used instead of mean due to strong right-skew.
• Added income_band: a derived Low/Medium/High split (terciles) of total_personal_income, for classification use cases.

Final shape

339 rows x 10 columns. Zero nulls.

Columns

• rownames: original row ID (not meaningful data)
• census_year: constant, 2000
• state_fips_code: U.S. state name (misleadingly named -- holds text, not a FIPS code)
• total_family_income: household income, USD
• age: age in years
• sex: Female / Male
• race_general: race category (8 levels)
• marital_status: marital status (6 levels)
• total_personal_income: personal income, USD (strictly positive)
• income_band: derived Low / Medium / High tercile of personal income