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020/Brazoria
2016 Confidence Interval Detail
020/Brazoria
020-901/Alvin ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 908,802,259 | 0.9482 | 958,449,967 | 195 | 7,652 | .013759259 |
| A | 1,155,473,991 | 0.9899 | 1,167,263,351 | 198 | 6,206 | .007644130 |
| A | 1,284,243,434 | 0.9824 | 1,307,251,053 | 200 | 5,242 | .007282113 |
| A | 1,721,648,193 | 0.9812 | 1,754,635,337 | 195 | 4,828 | .007130761 |
| B | 93,461,910 | 0.7382 | 126,607,843 | 7 | 22 | .005482381 |
| B | 39,865,260 | 0.8223 | 48,480,190 | 3 | 2 | .000066758 |
| B | 286,074,860 | 0.8459 | 338,189,928 | 4 | 8 | .003935253 |
| E | 383,306,660 | 0.8872 | 432,040,870 | 26 | 3,216 | .013663453 |
| F1 | 206,755,829 | 0.9586 | 215,685,196 | 11 | 544 | .024973619 |
| F1 | 234,109,826 | 0.9227 | 253,722,582 | 10 | 167 | .105055361 |
| F1 | 244,513,875 | 0.8713 | 280,631,097 | 8 | 53 | .021435886 |
| F1 | 278,239,238 | 0.8460 | 328,887,988 | 5 | 14 | .075829661 |
| L1 | 92,184,555 | 1.0141 | 90,902,825 | 11 | 728 | .007011702 |
| L1 | 93,695,510 | 0.9735 | 96,246,030 | 9 | 128 | .006191083 |
| L1 | 114,510,820 | 0.9934 | 115,271,613 | 8 | 44 | .002545354 |
| L1 | 84,770,740 | 0.9731 | 87,114,110 | 6 | 13 | .004477075 |
| Random Totals: | 7,221,656,960 | 7,601,379,980 | 896 | 28,867 | ||
| Catg D1 Exception Values: | 15,204,191 | 15,314,398 | ||||
| Total Test Values (4): | 7,236,861,151 | 7,616,694,378 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 380,834,718 |
Confidence Interval Values (5)
| State Lower Limit: | 7,235,859,660 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 7,236,861,151 | (Within Confidence Interval) |
| State Upper Limit: | 7,997,529,096 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 5,747,214,805 | (See ISD Summary Worksheet) |
Sources:
(1) See Stratified Category Worksheet Reports PTS236, PTS430
(2) Number of parcels sampled by staff
(3) Total Category Parcels from Stratification Report, Appraisal Roll, or Self-report
(4) Includes any parcels in A, B, C, D3, F1, G1, G2, or L1 marked as exception properties
(5) Unstudied categories and sub-categories were not included in the Confidence Interval Values
(6) Includes local value of unstudied property categories and sub-categories