2007 Confidence Interval Detail
084/Galveston
084-903/High Island ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 20,599,787 | 0.7226 | 28,507,870 | 25 | 485 | .090655651 |
| A | 20,626,254 | 1.0031 | 20,562,510 | 23 | 216 | .081736092 |
| A | 20,552,183 | 1.2533 | 16,398,454 | 21 | 114 | .039723744 |
| A | 20,557,400 | 1.3940 | 14,747,059 | 23 | 56 | .031330048 |
| C | 2,124,298 | 0.8894 | 2,388,462 | 8 | 729 | .025410901 |
| C | 2,112,888 | 0.9787 | 2,158,872 | 7 | 271 | .003648854 |
| C | 2,154,765 | 0.9168 | 2,350,311 | 8 | 75 | .006145207 |
| C | 2,069,482 | 1.0216 | 2,025,726 | 7 | 28 | .020521330 |
| G1 | 16,575,790 | 0.9121 | 18,173,216 | 20 | 26 | .450245969 |
| Random Totals: | 107,372,847 | 107,312,480 | 142 | 2,000 | ||
| Catg D1 Exception Values: | 325,396 | 223,571 | ||||
| Catg G1 Exception Values: | 7,655,540 | 7,823,668 | ||||
| Total Test Values (4): | 115,353,783 | 115,359,719 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 5,767,986 |
Confidence Interval Values (5)
| State Lower Limit: | 109,591,733 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 115,353,783 | (Within Confidence Interval) |
| State Upper Limit: | 121,127,705 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 122,599,491 | (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