2008 Confidence Interval Detail
226/Tom Green
226-906/Wall ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 13,432,450 | 0.9351 | 14,364,720 | 20 | 227 | .034865510 |
| A | 19,800,400 | 1.0853 | 18,244,172 | 20 | 188 | .022376552 |
| A | 36,023,900 | 1.0166 | 35,435,668 | 24 | 236 | .013740540 |
| A | 59,711,400 | 1.0865 | 54,957,570 | 30 | 210 | .052792249 |
| D3 | 39,305,730 | 0.8314 | 47,276,558 | 31 | 2,460 | .174905562 |
| G1 | 2,818,390 | 0.9931 | 2,837,972 | 3 | 8 | .000059371 |
| G1 | 3,485,560 | 0.9996 | 3,486,955 | 2 | 3 | .000000018 |
| Random Totals: | 174,577,830 | 176,603,615 | 130 | 3,332 | ||
| Catg D1 Exception Values: | 32,946,930 | 31,098,539 | ||||
| Catg G1 Exception Values: | 13,222,050 | 13,215,638 | ||||
| Total Test Values (4): | 220,746,810 | 220,917,792 |
Margin of Error
| Margin of Error Percent: | 5.0000002 |
|---|---|
| Margin of Error Value: | 11,045,890 |
Confidence Interval Values (5)
| State Lower Limit: | 209,871,902 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 220,746,810 | (Within Confidence Interval) |
| State Upper Limit: | 231,963,682 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 209,365,065 | (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