2007 Confidence Interval Detail
226/Tom Green
226-907/Grape Creek ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 20,624,564 | 1.0588 | 19,479,188 | 19 | 698 | .183658311 |
| A | 20,428,780 | 0.9796 | 20,854,206 | 8 | 405 | .007029774 |
| A | 20,550,057 | 0.8727 | 23,547,676 | 7 | 294 | .023190571 |
| A | 20,428,875 | 0.9417 | 21,693,613 | 8 | 184 | .004516221 |
| D3 | 9,408,765 | 0.9184 | 10,244,735 | 16 | 1,087 | .101341607 |
| Random Totals: | 91,441,041 | 95,819,418 | 58 | 2,668 | ||
| Catg J Exception Values: | 1,912,906 | 1,950,311 | ||||
| Catg D1 Exception Values: | 5,494,780 | 5,237,935 | ||||
| Total Test Values (4): | 98,848,727 | 103,007,664 |
Margin of Error
| Margin of Error Percent: | 5.0175742 |
|---|---|
| Margin of Error Value: | 5,168,486 |
Confidence Interval Values (5)
| State Lower Limit: | 97,839,178 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 98,848,727 | (Within Confidence Interval) |
| State Upper Limit: | 108,176,150 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 109,811,145 | (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