2008 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 | 16,134,140 | 0.9747 | 16,552,929 | 7 | 412 | .007763091 |
| A | 15,930,150 | 0.9910 | 16,074,823 | 8 | 230 | .011235595 |
| A | 15,434,410 | 1.0992 | 14,041,494 | 7 | 155 | .006332340 |
| A | 18,029,960 | 0.9780 | 18,435,542 | 10 | 94 | .010094052 |
| D3 | 69,427,910 | 1.0340 | 67,144,981 | 20 | 4,191 | .016745414 |
| G1 | 11,633,610 | 1.0674 | 10,899,016 | 6 | 13 | .033543838 |
| G1 | 9,504,551 | 1.0511 | 9,042,480 | 3 | 5 | .002783563 |
| G1 | 12,497,849 | 1.2651 | 9,878,942 | 3 | 4 | .186507372 |
| Random Totals: | 168,592,580 | 162,070,207 | 64 | 5,104 | ||
| Catg J Exception Values: | 7,686,187 | 7,587,415 | ||||
| Catg D1 Exception Values: | 15,003,340 | 16,296,853 | ||||
| Catg G1 Exception Values: | 18,948,690 | 17,288,917 | ||||
| Total Test Values (4): | 210,230,797 | 203,243,392 |
Margin of Error
| Margin of Error Percent: | 5.0000002 |
|---|---|
| Margin of Error Value: | 10,162,170 |
Confidence Interval Values (5)
| State Lower Limit: | 193,081,222 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 210,230,797 | (Within Confidence Interval) |
| State Upper Limit: | 213,405,562 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 271,501,554 | (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