2010 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 | 16,328,480 | 1.0400 | 15,700,462 | 10 | 401 | .016264563 |
| A | 17,006,380 | 0.9737 | 17,465,729 | 10 | 236 | .003433611 |
| A | 17,898,360 | 0.9551 | 18,739,776 | 9 | 166 | .015031664 |
| A | 18,497,430 | 0.9880 | 18,722,095 | 9 | 84 | .000972160 |
| D3 | 73,635,390 | 0.9926 | 74,184,354 | 24 | 4,249 | .077167203 |
| G1 | 5,621,790 | 0.9667 | 5,815,444 | 5 | 10 | .003024013 |
| G1 | 5,948,320 | 1.0325 | 5,761,085 | 3 | 5 | .004675339 |
| G1 | 7,189,230 | 1.0094 | 7,122,281 | 2 | 3 | .000743832 |
| Random Totals: | 162,125,380 | 163,511,226 | 72 | 5,154 | ||
| Catg J Exception Values: | 7,316,130 | 6,816,562 | ||||
| Catg D1 Exception Values: | 14,451,840 | 16,103,601 | ||||
| Catg G1 Exception Values: | 10,678,700 | 10,131,731 | ||||
| Total Test Values (4): | 194,572,050 | 196,563,120 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 9,828,156 |
Confidence Interval Values (5)
| State Lower Limit: | 186,734,964 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 194,572,050 | (Within Confidence Interval) |
| State Upper Limit: | 206,391,276 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 252,675,752 | (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