2011 Confidence Interval Detail
084/Galveston
084-906/Texas City ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 157,982,829 | 1.0706 | 147,564,757 | 19 | 3,070 | .140584665 |
| A | 156,398,005 | 1.0559 | 148,118,198 | 13 | 1,901 | .054642532 |
| A | 159,937,245 | 1.0155 | 157,496,056 | 11 | 1,391 | .005944076 |
| A | 158,851,680 | 1.0061 | 157,888,560 | 10 | 847 | .004774698 |
| F1 | 17,292,018 | 1.0363 | 16,686,305 | 10 | 244 | .005433011 |
| F1 | 18,489,800 | 0.9104 | 20,309,534 | 9 | 96 | .095955410 |
| F1 | 16,485,890 | 1.0515 | 15,678,450 | 8 | 38 | .006813612 |
| F1 | 17,149,860 | 0.9861 | 17,391,603 | 6 | 14 | .013062572 |
| L1 | 16,813,910 | 1.0129 | 16,599,773 | 10 | 254 | .005961428 |
| L1 | 15,648,515 | 1.0722 | 14,594,772 | 8 | 38 | .017354320 |
| L1 | 34,644,359 | 1.0342 | 33,498,703 | 8 | 15 | .038278655 |
| Random Totals: | 769,694,111 | 745,826,711 | 112 | 7,908 | ||
| Catg J Exception Values: | 7,014,914 | 7,088,298 | ||||
| Catg D1 Exception Values: | 14,689 | 19,456 | ||||
| Total Test Values (4): | 776,723,714 | 752,934,465 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 37,646,723 |
Confidence Interval Values (5)
| State Lower Limit: | 715,287,742 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 776,723,714 | (Within Confidence Interval) |
| State Upper Limit: | 790,581,188 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 3,870,200,866 | (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