2008 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 | 157,343,799 | 0.9734 | 161,643,517 | 17 | 2,867 | .039748363 |
| A | 164,150,870 | 1.0139 | 161,900,454 | 19 | 1,989 | .023826108 |
| A | 174,182,170 | 0.9863 | 176,601,612 | 13 | 1,552 | .031398844 |
| A | 175,761,510 | 0.9664 | 181,872,423 | 10 | 978 | .020118499 |
| F1 | 76,896,890 | 1.0100 | 76,135,535 | 10 | 616 | .011911225 |
| L1 | 15,133,390 | 0.8233 | 18,381,380 | 10 | 252 | .333770288 |
| L1 | 14,723,014 | 0.9672 | 15,222,306 | 6 | 43 | .009194374 |
| L1 | 24,169,495 | 1.0312 | 23,438,222 | 6 | 19 | .010169734 |
| L1 | 15,855,664 | 1.0268 | 15,441,823 | 3 | 5 | .002129037 |
| Random Totals: | 818,216,802 | 830,637,272 | 94 | 8,321 | ||
| Catg J Exception Values: | 23,195,516 | 22,959,078 | ||||
| Catg D1 Exception Values: | 14,808 | 11,311 | ||||
| Total Test Values (4): | 841,427,126 | 853,607,661 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 42,680,383 |
Confidence Interval Values (5)
| State Lower Limit: | 810,927,278 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 841,427,126 | (Within Confidence Interval) |
| State Upper Limit: | 896,288,044 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 5,177,534,205 | (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