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| license: cc0-1.0 |
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| |
| # Census Earners (Cleaned) |
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|
| 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 |
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