2008 Confidence Interval Detail
084/Galveston
084-902/Galveston ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 838,568,719 | 0.9726 | 862,192,802 | 12 | 10,591 | .006261450 |
| A | 920,152,485 | 0.9473 | 971,342,220 | 14 | 6,337 | .010955596 |
| A | 931,250,376 | 0.9631 | 966,930,097 | 23 | 3,871 | .008634920 |
| A | 926,398,633 | 0.9611 | 963,894,114 | 13 | 2,014 | .014775772 |
| C | 84,230,895 | 0.9574 | 87,978,792 | 7 | 3,490 | .002970981 |
| C | 85,763,993 | 1.0590 | 80,985,829 | 8 | 1,119 | .011616720 |
| C | 86,198,753 | 0.9441 | 91,302,566 | 7 | 555 | .013309316 |
| C | 85,703,820 | 0.9234 | 92,813,320 | 7 | 184 | .024266101 |
| Random Totals: | 3,958,267,674 | 4,117,439,740 | 91 | 28,161 | ||
| Catg D1 Exception Values: | 431,741 | 336,782 | ||||
| Total Test Values (4): | 3,958,699,415 | 4,117,776,522 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 205,888,826 |
Confidence Interval Values (5)
| State Lower Limit: | 3,911,887,696 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 3,958,699,415 | (Within Confidence Interval) |
| State Upper Limit: | 4,323,665,348 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 5,018,053,476 | (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