2007 Confidence Interval Detail
084/Galveston
084-911/Friendswood ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 432,370,931 | 1.0335 | 418,356,005 | 34 | 2,914 | .005392255 |
| A | 432,120,111 | 1.0067 | 429,244,175 | 23 | 1,861 | .004671850 |
| A | 432,330,409 | 1.0089 | 428,516,611 | 33 | 1,391 | .002246916 |
| A | 432,070,714 | 0.9925 | 435,335,732 | 31 | 807 | .002337384 |
| F1 | 30,023,334 | 0.9000 | 33,359,260 | 7 | 100 | .055630222 |
| F1 | 29,429,807 | 0.9302 | 31,638,150 | 8 | 44 | .003046922 |
| F1 | 30,472,635 | 0.9789 | 31,129,467 | 7 | 19 | .030141294 |
| F1 | 28,648,362 | 1.0043 | 28,525,701 | 4 | 6 | .001355949 |
| Random Totals: | 1,847,466,303 | 1,836,105,101 | 147 | 7,142 | ||
| Catg D1 Exception Values: | 208,417 | 273,473 | ||||
| Total Test Values (4): | 1,847,674,720 | 1,836,378,574 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 91,818,929 |
Confidence Interval Values (5)
| State Lower Limit: | 1,744,559,645 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 1,847,674,720 | (Within Confidence Interval) |
| State Upper Limit: | 1,928,197,503 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 1,915,729,430 | (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