{
  "alt": "Grouped horizontal bar chart of the {fact:n_measures} weights, a tract-box bar and a county-box bar for each measure, ordered from the most negative weight to the most positive. Most pairs of bars have similar lengths. The county-box bars for homeownership and crowding are close to zero while the tract-box bars are clearly nonzero, and the county bars for income disparity and incomplete plumbing are longer than the tract bars.",
  "caption": "The two bars of a measure are close for most measures, and they part for homeownership and crowding, whose county bars are close to zero, and for schooling, income disparity and incomplete plumbing. Each bar is the weight of a measure in the first component of the standardized measures in its box, signed so that the poverty rate is positive, with a 95% interval from a bootstrap over counties. Bars to the left measure advantage and bars to the right measure hardship.",
  "data": [
    {
      "box": "Tract box",
      "conf_high": -0.366,
      "conf_low": -0.379,
      "measure": "Family income",
      "n": 76496,
      "weight": -0.374
    },
    {
      "box": "County box",
      "conf_high": -0.368,
      "conf_low": -0.383,
      "measure": "Family income",
      "n": 3205,
      "weight": -0.377
    },
    {
      "box": "Tract box",
      "conf_high": -0.322,
      "conf_low": -0.339,
      "measure": "White-collar jobs",
      "n": 76496,
      "weight": -0.331
    },
    {
      "box": "County box",
      "conf_high": -0.29,
      "conf_low": -0.319,
      "measure": "White-collar jobs",
      "n": 3205,
      "weight": -0.307
    },
    {
      "box": "Tract box",
      "conf_high": -0.281,
      "conf_low": -0.312,
      "measure": "Mortgage cost",
      "n": 76496,
      "weight": -0.297
    },
    {
      "box": "County box",
      "conf_high": -0.27,
      "conf_low": -0.344,
      "measure": "Mortgage cost",
      "n": 3205,
      "weight": -0.317
    },
    {
      "box": "Tract box",
      "conf_high": -0.279,
      "conf_low": -0.3,
      "measure": "Gross rent",
      "n": 76496,
      "weight": -0.289
    },
    {
      "box": "County box",
      "conf_high": -0.299,
      "conf_low": -0.354,
      "measure": "Gross rent",
      "n": 3205,
      "weight": -0.333
    },
    {
      "box": "Tract box",
      "conf_high": -0.254,
      "conf_low": -0.288,
      "measure": "Home value",
      "n": 76496,
      "weight": -0.271
    },
    {
      "box": "County box",
      "conf_high": -0.257,
      "conf_low": -0.324,
      "measure": "Home value",
      "n": 3205,
      "weight": -0.297
    },
    {
      "box": "Tract box",
      "conf_high": -0.161,
      "conf_low": -0.198,
      "measure": "Homeownership",
      "n": 76496,
      "weight": -0.182
    },
    {
      "box": "County box",
      "conf_high": 0.101,
      "conf_low": -0.059,
      "measure": "Homeownership",
      "n": 3205,
      "weight": 0.028
    },
    {
      "box": "Tract box",
      "conf_high": 0.191,
      "conf_low": 0.077,
      "measure": "No vehicle",
      "n": 76496,
      "weight": 0.133
    },
    {
      "box": "County box",
      "conf_high": 0.108,
      "conf_low": -0.061,
      "measure": "No vehicle",
      "n": 3205,
      "weight": 0.013
    },
    {
      "box": "Tract box",
      "conf_high": 0.155,
      "conf_low": 0.12,
      "measure": "Crowding",
      "n": 76496,
      "weight": 0.138
    },
    {
      "box": "County box",
      "conf_high": 0.034,
      "conf_low": -0.122,
      "measure": "Crowding",
      "n": 3205,
      "weight": -0.051
    },
    {
      "box": "Tract box",
      "conf_high": 0.184,
      "conf_low": 0.169,
      "measure": "No plumbing",
      "n": 76496,
      "weight": 0.177
    },
    {
      "box": "County box",
      "conf_high": 0.278,
      "conf_low": 0.245,
      "measure": "No plumbing",
      "n": 3205,
      "weight": 0.264
    },
    {
      "box": "Tract box",
      "conf_high": 0.195,
      "conf_low": 0.177,
      "measure": "Unemployment",
      "n": 76496,
      "weight": 0.186
    },
    {
      "box": "County box",
      "conf_high": 0.219,
      "conf_low": 0.116,
      "measure": "Unemployment",
      "n": 3205,
      "weight": 0.171
    },
    {
      "box": "Tract box",
      "conf_high": 0.217,
      "conf_low": 0.196,
      "measure": "Under 9 years of school",
      "n": 76496,
      "weight": 0.207
    },
    {
      "box": "County box",
      "conf_high": 0.154,
      "conf_low": 0.012,
      "measure": "Under 9 years of school",
      "n": 3205,
      "weight": 0.086
    },
    {
      "box": "Tract box",
      "conf_high": 0.272,
      "conf_low": 0.259,
      "measure": "Income disparity",
      "n": 76496,
      "weight": 0.266
    },
    {
      "box": "County box",
      "conf_high": 0.356,
      "conf_low": 0.311,
      "measure": "Income disparity",
      "n": 3205,
      "weight": 0.338
    },
    {
      "box": "Tract box",
      "conf_high": 0.349,
      "conf_low": 0.338,
      "measure": "Poverty",
      "n": 76496,
      "weight": 0.344
    },
    {
      "box": "County box",
      "conf_high": 0.358,
      "conf_low": 0.309,
      "measure": "Poverty",
      "n": 3205,
      "weight": 0.337
    },
    {
      "box": "Tract box",
      "conf_high": 0.376,
      "conf_low": 0.364,
      "measure": "Below 150% of poverty",
      "n": 76496,
      "weight": 0.371
    },
    {
      "box": "County box",
      "conf_high": 0.373,
      "conf_low": 0.331,
      "measure": "Below 150% of poverty",
      "n": 3205,
      "weight": 0.355
    }
  ],
  "id": "weights_by_zoom",
  "notes": [
    "Each box standardizes its measures with population-weighted means and standard deviations, fits the component to the population-weighted correlation matrix of its units (tracts weighted by residents in the tract box, counties weighted by residents in the county box) and signs it so that the poverty rate has a positive weight.",
    "The county box takes every measure from the county's own ACS estimate, not from an average of its tracts. Counties include Connecticut planning regions and Puerto Rico municipios."
  ],
  "source": "ACS 2019-2023 five-year estimates (tracts and counties); population-weighted",
  "spec": {
    "category": "measure",
    "categoryLabel": "Measure",
    "colors": {
      "County box": "cat2",
      "Tract box": "cat1"
    },
    "domain": [
      -0.5,
      0.5
    ],
    "format": {
      "digits": 2,
      "signed": true
    },
    "group": "box",
    "hi": "conf_high",
    "lo": "conf_low",
    "n": "n",
    "orientation": "h",
    "sort": "data",
    "value": "weight",
    "valueLabel": "Weight on the standardized measure in the first component (unit-length vector)"
  },
  "subtitle": "Weights of the {fact:n_measures} standardized measures in the first principal component, tract box ({fact:n_tracts} tracts) and county box ({fact:n_counties} counties), ACS 2019 to 2023",
  "title": "Homeownership has a weight of {fact:load_own_tract} in the tract index and {fact:load_own_county} in the county index, and crowding goes from {fact:load_crowd_tract} to {fact:load_crowd_county}",
  "type": "bar",
  "width": "wide"
}