2009 Confidence Interval Detail
091/Grayson
091-907/Tioga ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 9,093,416 | 0.9739 | 9,337,115 | 7 | 142 | .004277645 |
| A | 9,138,059 | 0.9527 | 9,591,749 | 7 | 92 | .006296634 |
| A | 9,327,314 | 0.9755 | 9,561,573 | 6 | 69 | .001368179 |
| A | 9,274,819 | 1.0647 | 8,711,204 | 6 | 38 | .007499071 |
| D3 | 26,211,079 | 0.8984 | 29,175,288 | 19 | 725 | .132865866 |
| F1 | 3,589,642 | 0.8526 | 4,210,230 | 11 | 32 | .071926014 |
| Random Totals: | 66,634,329 | 70,587,159 | 56 | 1,098 | ||
| Catg D1 Exception Values: | 2,248,309 | 1,837,347 | ||||
| Catg F1 Exception Values: | 912,644 | 901,762 | ||||
| Total Test Values (4): | 69,795,282 | 73,326,268 |
Margin of Error
| Margin of Error Percent: | 6.7526906 |
|---|---|
| Margin of Error Value: | 4,951,496 |
Confidence Interval Values (5)
| State Lower Limit: | 68,374,772 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 69,795,282 | (Within Confidence Interval) |
| State Upper Limit: | 78,277,764 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 71,423,920 | (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