2006 Confidence Interval Detail
113/Houston
113-902/Grapeland ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 13,659,202 | 0.9940 | 13,741,652 | 11 | 409 | .035048770 |
| A | 13,632,323 | 0.9372 | 14,545,799 | 14 | 225 | .017288734 |
| A | 13,681,124 | 0.9285 | 14,734,652 | 14 | 157 | .058128229 |
| A | 13,548,145 | 0.9820 | 13,796,482 | 11 | 84 | .004772589 |
| D3 | 54,021,500 | 0.8611 | 62,735,455 | 40 | 4,107 | .074453854 |
| G1 | 46,868,229 | 1.0660 | 43,966,444 | 8 | 50 | .007397544 |
| Random Totals: | 155,410,523 | 163,520,484 | 98 | 5,032 | ||
| Catg J Exception Values: | 7,350,520 | 8,077,388 | ||||
| Catg D1 Exception Values: | 15,211,990 | 15,736,188 | ||||
| Total Test Values (4): | 177,973,033 | 187,334,060 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 9,366,703 |
Confidence Interval Values (5)
| State Lower Limit: | 177,967,357 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 177,973,033 | (Within Confidence Interval) |
| State Upper Limit: | 196,700,763 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 210,474,749 | (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