Table 3.
Design effect due to the unequal sampling design effect (2013)
| Number | Adult population size | Sampling rate | Design effect | Margin of error | Expected margin of error | |
|---|---|---|---|---|---|---|
| Nationwide | 483,865 | 237,659,116 | 0.20% | 4.45 | 0.14% | 0.30% |
| Alabama | 6,503 | 3,675,910 | 0.25% | 2.19 | 1.22% | 1.80% |
| Alaska | 4,578 | 532,446 | 0.82% | 2.10 | 1.45% | 2.10% |
| Arizona | 4,252 | 4,858,658 | 0.15% | 3.21 | 1.50% | 2.69% |
| Arkansas | 5,268 | 2,223,405 | 0.23% | 2.14 | 1.35% | 1.97% |
| California | 11,518 | 28,416,963 | 0.05% | 1.96 | 0.91% | 1.28% |
| Colorado | 13,649 | 3,891,264 | 0.31% | 1.76 | 0.84% | 1.11% |
| Connecticut | 7,710 | 2,779,516 | 0.32% | 2.20 | 1.12% | 1.65% |
| Delaware | 5,206 | 703,509 | 0.74% | 1.92 | 1.36% | 1.88% |
| DC | 4,931 | 514,080 | 0.74% | 2.76 | 1.40% | 2.32% |
| Florida | 34,186 | 15,084,361 | 0.05% | 5.16a | 0.53% | 1.20% |
| Georgia | 8,138 | 7,322,131 | 0.08% | 1.96 | 1.09% | 1.52% |
| Hawaii | 7,858 | 1,071,394 | 0.71% | 2.18 | 1.11% | 1.63% |
| Idaho | 5,630 | 1,156,346 | 0.51% | 2.18 | 1.31% | 1.93% |
| Illinois | 5,608 | 9,762,138 | 0.06% | 2.12 | 1.31% | 1.90% |
| Indiana | 10,338 | 4,917,721 | 0.18% | 1.80 | 0.96% | 1.29% |
| Iowa | 8,157 | 2,337,531 | 0.31% | 1.82 | 1.09% | 1.46% |
| Kansas | 23,282 | 2,143,345 | 0.55% | 1.60 | 0.64% | 0.81% |
| Kentucky | 11,013 | 3,340,703 | 0.34% | 2.42 | 0.93% | 1.45% |
| Louisiana | 5,251 | 3,452,150 | 0.26% | 2.64 | 1.35% | 2.20% |
| Maine | 8,097 | 1,059,215 | 0.94% | 1.79 | 1.09% | 1.46% |
| Maryland | 13,011 | 4,485,506 | 0.29% | 2.51 | 0.86% | 1.36% |
| Massachusetts | 15,071 | 5,197,008 | 0.42% | 2.56 | 0.80% | 1.28% |
| Michigan | 12,759 | 7,582,340 | 0.14% | 1.93 | 0.87% | 1.20% |
| Minnesota | 14,340 | 4,067,360 | 0.30% | 3.43 | 0.82% | 1.51% |
| Mississippi | 7,453 | 2,228,376 | 0.35% | 2.25 | 1.14% | 1.70% |
| Missouri | 7,118 | 4,594,138 | 0.15% | 2.29 | 1.16% | 1.76% |
| Montana | 9,693 | 775,259 | 1.12% | 1.98 | 1.00% | 1.40% |
| Nebraska | 17,139 | 1,381,509 | 1.39% | 2.78 | 0.75% | 1.25% |
| Nevada | 5,101 | 2,067,996 | 0.23% | 3.48 | 1.37% | 2.56% |
| New Hampshire | 6,463 | 1,038,311 | 0.73% | 1.85 | 1.22% | 1.66% |
| New Jersey | 13,386 | 6,785,166 | 0.23% | 2.29 | 0.85% | 1.28% |
| New Mexico | 9,316 | 1,555,803 | 0.56% | 2.20 | 1.02% | 1.51% |
| New York | 8,979 | 15,196,034 | 0.04% | 1.84 | 1.03% | 1.40% |
| North Carolina | 8,860 | 7,369,782 | 0.16% | 1.90 | 1.04% | 1.43% |
| North Dakota | 7,806 | 535,913 | 0.91% | 2.08 | 1.11% | 1.60% |
| Ohio | 11,971 | 8,853,774 | 0.15% | 2.25 | 0.90% | 1.34% |
| Oklahoma | 8,244 | 2,850,383 | 0.28% | 1.76 | 1.08% | 1.43% |
| Oregon | 5,949 | 3,006,433 | 0.18% | 1.84 | 1.27% | 1.72% |
| Pennsylvania | 11,429 | 9,971,001 | 0.20% | 1.83 | 0.92% | 1.24% |
| Rhode Island | 6,531 | 831,949 | 0.66% | 1.96 | 1.21% | 1.70% |
| South Carolina | 10,717 | 3,600,525 | 0.36% | 2.10 | 0.95% | 1.37% |
| South Dakota | 6,895 | 621,017 | 1.27% | 2.89 | 1.18% | 2.00% |
| Tennessee | 5,815 | 4,909,634 | 0.14% | 2.13 | 1.29% | 1.88% |
| Texas | 10,917 | 18,714,465 | 0.05% | 2.54 | 0.94% | 1.49% |
| Utah | 12,769 | 1,934,173 | 0.64% | 1.71 | 0.87% | 1.13% |
| Vermont | 6,392 | 499,262 | 1.21% | 1.76 | 1.23% | 1.63% |
| Virginia | 8,464 | 6,244,639 | 0.12% | 1.92 | 1.07% | 1.47% |
| Washington | 11,162 | 5,234,679 | 0.29% | 1.91 | 0.93% | 1.28% |
| West Virginia | 5,899 | 1,468,456 | 0.37% | 1.47 | 1.28% | 1.55% |
| Wisconsin | 6,589 | 4,381,727 | 0.12% | 2.57 | 1.21% | 1.94% |
| Wyoming | 6,454 | 433,712 | 1.45% | 2.09 | 1.22% | 1.76% |
aThe reason for the high Florida design effect is because they oversampled smaller counties that particular year. They do this every 3 years in order to have direct estimates for each county in the state. This design leads to highly unequal probabilities of selection across counties in the state