2011 Confidence Interval Detail
253/Zapata
253-901/Zapata ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 49,180,871 | 0.9109 | 53,991,515 | 10 | 1,737 | .178916052 |
| A | 66,749,411 | 0.9638 | 69,256,496 | 9 | 1,202 | .041762591 |
| A | 70,647,292 | 1.0063 | 70,205,000 | 10 | 750 | .014874262 |
| A | 93,117,656 | 1.1761 | 79,174,948 | 11 | 488 | .032148709 |
| G1 | 358,817,211 | 0.9956 | 360,402,984 | 10 | 965 | .008052860 |
| G1 | 359,096,260 | 0.9819 | 365,715,714 | 10 | 397 | .032117472 |
| G1 | 359,304,092 | 1.0111 | 355,359,600 | 10 | 214 | .012771601 |
| G1 | 357,493,622 | 0.9505 | 376,111,123 | 10 | 79 | .035695346 |
| Random Totals: | 1,714,406,415 | 1,730,217,380 | 80 | 5,832 | ||
| Catg D1 Exception Values: | 28,992,336 | 49,686,011 | ||||
| Total Test Values (4): | 1,743,398,751 | 1,779,903,391 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 88,995,170 |
Confidence Interval Values (5)
| State Lower Limit: | 1,690,908,221 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 1,743,398,751 | (Within Confidence Interval) |
| State Upper Limit: | 1,868,898,561 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 2,102,469,701 | (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