2009 Confidence Interval Detail
008/Austin
008-901/Bellville ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 89,043,577 | 0.8818 | 100,979,334 | 12 | 1,002 | .013173953 |
| A | 89,189,834 | 0.8947 | 99,686,860 | 11 | 602 | .008033920 |
| A | 82,268,745 | 0.9466 | 86,909,724 | 12 | 389 | .013947199 |
| A | 93,655,146 | 0.9023 | 103,796,017 | 12 | 272 | .024157093 |
| D3 | 411,129,414 | 0.8680 | 473,651,399 | 32 | 9,124 | .069907454 |
| F1 | 16,032,930 | 0.8659 | 18,515,914 | 9 | 128 | .020889742 |
| F1 | 15,961,379 | 0.9399 | 16,981,997 | 9 | 60 | .005897241 |
| F1 | 15,905,659 | 0.9122 | 17,436,592 | 6 | 33 | .026963148 |
| F1 | 15,917,773 | 0.8818 | 18,051,455 | 5 | 16 | .026454032 |
| G1 | 12,573,960 | 1.0049 | 12,512,648 | 6 | 27 | .001142961 |
| G1 | 12,557,040 | 1.0827 | 11,597,894 | 5 | 12 | .030039541 |
| G1 | 14,233,601 | 1.0024 | 14,199,522 | 3 | 5 | .011014007 |
| Random Totals: | 868,469,058 | 974,319,356 | 122 | 11,670 | ||
| Catg D1 Exception Values: | 21,645,038 | 21,577,821 | ||||
| Catg G1 Exception Values: | 8,312,740 | 8,012,180 | ||||
| Total Test Values (4): | 898,426,836 | 1,003,909,357 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 50,195,468 |
Confidence Interval Values (5)
| Local Test Value: | 898,426,836 | (Outside Confidence Interval) |
|---|---|---|
| State Lower Limit: | 953,713,889 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 1,054,104,825 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 917,559,689 | (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