2008 Confidence Interval Detail
226/Tom Green
226-907/Grape Creek ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 16,247,615 | 0.8775 | 18,515,801 | 18 | 579 | .107927501 |
| A | 13,400,825 | 1.0193 | 13,147,086 | 19 | 270 | .017958682 |
| A | 23,434,286 | 1.0134 | 23,124,419 | 20 | 335 | .017032201 |
| A | 57,856,800 | 1.0846 | 53,343,906 | 31 | 462 | .025108437 |
| D3 | 11,081,315 | 0.6704 | 16,529,408 | 37 | 1,083 | .417362490 |
| L1 | 1,478,101 | 0.9605 | 1,538,887 | 8 | 64 | .070861967 |
| L1 | 1,342,832 | 0.9958 | 1,348,496 | 5 | 15 | .000294307 |
| L1 | 443,936 | 1.0971 | 404,645 | 3 | 2 | .054675485 |
| Random Totals: | 125,285,710 | 127,952,648 | 141 | 2,810 | ||
| Catg D1 Exception Values: | 5,770,290 | 5,366,776 | ||||
| Catg L1 Exception Values: | 5,968,511 | 6,200,723 | ||||
| Total Test Values (4): | 137,024,511 | 139,520,147 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 6,976,007 |
Confidence Interval Values (5)
| State Lower Limit: | 132,544,140 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 137,024,511 | (Within Confidence Interval) |
| State Upper Limit: | 146,496,154 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 117,362,751 | (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