2007 Confidence Interval Detail
184/Parker
184-909/Brock ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 32,571,913 | 1.0394 | 31,337,226 | 15 | 240 | .021054243 |
| A | 32,605,171 | 1.0042 | 32,468,802 | 22 | 152 | .002014579 |
| A | 32,535,326 | 1.0018 | 32,476,868 | 16 | 107 | .002989275 |
| A | 32,244,706 | 0.9840 | 32,769,010 | 9 | 68 | .000963442 |
| C | 4,891,664 | 0.9853 | 4,964,644 | 8 | 183 | .001340321 |
| C | 3,759,316 | 0.9774 | 3,846,241 | 8 | 91 | .004214524 |
| C | 4,683,231 | 1.0839 | 4,320,722 | 7 | 86 | .047999634 |
| C | 3,942,578 | 1.0038 | 3,927,653 | 8 | 40 | .019042349 |
| D3 | 111,691,820 | 0.9823 | 113,704,388 | 26 | 2,168 | .015378403 |
| Random Totals: | 258,925,725 | 259,815,554 | 119 | 3,135 | ||
| Catg D1 Exception Values: | 4,422,420 | 3,341,263 | ||||
| Total Test Values (4): | 263,348,145 | 263,156,817 |
Margin of Error
| Margin of Error Percent: | 5.0000001 |
|---|---|
| Margin of Error Value: | 13,157,841 |
Confidence Interval Values (5)
| State Lower Limit: | 249,998,976 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 263,348,145 | (Within Confidence Interval) |
| State Upper Limit: | 276,314,658 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 294,009,201 | (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