2008 Confidence Interval Detail
031/Cameron
031-909/Point Isabel ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 585,392,987 | 1.0073 | 581,150,588 | 49 | 4,140 | .012472132 |
| A | 623,243,514 | 1.0048 | 620,266,236 | 40 | 2,335 | .014415196 |
| A | 573,643,191 | 1.0003 | 573,471,150 | 38 | 1,487 | .014919020 |
| A | 734,630,660 | 0.9840 | 746,575,874 | 29 | 1,074 | .056157869 |
| C | 72,378,310 | 0.8003 | 90,438,973 | 13 | 1,216 | .049805137 |
| C | 89,170,305 | 0.8909 | 100,090,139 | 12 | 495 | .026631511 |
| C | 63,390,701 | 0.9608 | 65,976,999 | 12 | 261 | .055565561 |
| C | 70,407,304 | 0.9771 | 72,057,419 | 7 | 82 | .001119564 |
| F1 | 69,305,183 | 0.9354 | 74,091,493 | 8 | 264 | .053857419 |
| F1 | 63,675,191 | 0.8570 | 74,300,106 | 7 | 76 | .023582777 |
| F1 | 91,166,837 | 0.9850 | 92,555,164 | 6 | 51 | .010580863 |
| F1 | 70,769,898 | 1.0095 | 70,103,911 | 4 | 13 | .002832485 |
| Random Totals: | 3,107,174,081 | 3,161,078,052 | 225 | 11,494 | ||
| Catg D1 Exception Values: | 1,496,353 | 1,522,897 | ||||
| Total Test Values (4): | 3,108,670,434 | 3,162,600,949 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 158,130,047 |
Confidence Interval Values (5)
| State Lower Limit: | 3,004,470,902 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 3,108,670,434 | (Within Confidence Interval) |
| State Upper Limit: | 3,320,730,996 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 3,585,253,361 | (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