2008 Confidence Interval Detail
101/Harris
101-920/Spring Branch ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 3,083,065,578 | 0.9706 | 3,176,453,305 | 28 | 18,644 | .009253505 |
| A | 3,427,354,647 | 0.9644 | 3,553,872,508 | 29 | 8,477 | .007812480 |
| A | 3,374,949,493 | 0.9501 | 3,552,204,497 | 26 | 4,178 | .005641959 |
| A | 4,238,771,865 | 0.9508 | 4,458,110,922 | 31 | 2,322 | .004550909 |
| B | 142,851,402 | 0.8235 | 173,468,612 | 5 | 82 | .057502307 |
| B | 125,756,480 | 0.8725 | 144,133,501 | 6 | 28 | .007871437 |
| B | 209,862,285 | 1.0255 | 204,643,866 | 5 | 27 | .000514878 |
| B | 227,660,884 | 0.9608 | 236,949,296 | 4 | 10 | .028344880 |
| C | 74,633,857 | 0.8616 | 86,622,397 | 9 | 368 | .023607194 |
| C | 67,109,669 | 0.8861 | 75,735,999 | 8 | 93 | .019972848 |
| C | 88,469,133 | 0.9466 | 93,459,891 | 6 | 62 | .005018043 |
| C | 60,194,948 | 0.9059 | 66,447,674 | 4 | 12 | .010244158 |
| F1 | 838,441,408 | 0.8724 | 961,074,516 | 18 | 869 | .022191427 |
| F1 | 911,190,891 | 0.9435 | 965,756,111 | 12 | 230 | .029967129 |
| F1 | 1,024,248,862 | 0.9799 | 1,045,258,559 | 8 | 95 | .005132763 |
| F1 | 1,037,122,806 | 0.9365 | 1,107,445,602 | 5 | 26 | .005843725 |
| L1 | 275,510,830 | 1.0177 | 270,719,102 | 7 | 2,306 | .013654481 |
| L1 | 259,186,723 | 1.0675 | 242,797,867 | 8 | 320 | .010238723 |
| L1 | 253,227,942 | 1.0059 | 251,742,660 | 9 | 96 | .001114441 |
| L1 | 276,176,249 | 0.9927 | 278,207,161 | 6 | 35 | .000102565 |
| Random Totals: | 19,995,785,952 | 20,945,104,046 | 234 | 38,280 | ||
| Catg D1 Exception Values: | 368,425 | 369,317 | ||||
| Total Test Values (4): | 19,996,154,377 | 20,945,473,363 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 1,047,273,668 |
Confidence Interval Values (5)
| State Lower Limit: | 19,898,199,695 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 19,996,154,377 | (Within Confidence Interval) |
| State Upper Limit: | 21,992,747,031 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 18,345,691,727 | (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