2009 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 | 16,567,370 | 0.9344 | 17,730,490 | 8 | 413 | .003158742 |
| A | 15,891,140 | 0.9367 | 16,965,026 | 8 | 225 | .004324790 |
| A | 16,789,570 | 0.9036 | 18,580,755 | 9 | 163 | .009512737 |
| A | 18,666,720 | 1.0221 | 18,263,105 | 7 | 91 | .002063355 |
| D3 | 72,537,690 | 1.0249 | 70,775,383 | 27 | 4,208 | .046070418 |
| G1 | 8,111,191 | 1.0167 | 7,977,959 | 5 | 12 | .000648013 |
| G1 | 6,759,849 | 1.1509 | 5,873,533 | 3 | 5 | .033353572 |
| G1 | 9,840,601 | 1.1575 | 8,501,599 | 3 | 4 | .114618309 |
| Random Totals: | 165,164,131 | 164,667,850 | 70 | 5,121 | ||
| Catg J Exception Values: | 8,160,498 | 8,085,466 | ||||
| Catg D1 Exception Values: | 15,939,280 | 17,186,234 | ||||
| Catg G1 Exception Values: | 15,261,810 | 14,931,652 | ||||
| Total Test Values (4): | 204,525,719 | 204,871,202 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 10,243,560 |
Confidence Interval Values (5)
| State Lower Limit: | 194,627,642 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 204,525,719 | (Within Confidence Interval) |
| State Upper Limit: | 215,114,762 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 263,148,958 | (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