2007 Confidence Interval Detail
091/Grayson
091-918/Tom Bean ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 22,986,466 | 0.9156 | 25,105,358 | 19 | 381 | .031919548 |
| A | 22,971,854 | 0.9410 | 24,412,172 | 16 | 238 | .015806663 |
| A | 22,908,150 | 0.9451 | 24,238,864 | 15 | 172 | .006473912 |
| A | 22,861,297 | 0.9764 | 23,413,864 | 15 | 115 | .012603981 |
| D3 | 40,787,723 | 0.9474 | 43,052,273 | 23 | 1,474 | .063777071 |
| Random Totals: | 132,515,490 | 140,222,531 | 88 | 2,380 | ||
| Catg D1 Exception Values: | 4,020,070 | 2,904,087 | ||||
| Total Test Values (4): | 136,535,560 | 143,126,618 |
Margin of Error
| Margin of Error Percent: | 5.0000001 |
|---|---|
| Margin of Error Value: | 7,156,331 |
Confidence Interval Values (5)
| State Lower Limit: | 135,970,287 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 136,535,560 | (Within Confidence Interval) |
| State Upper Limit: | 150,282,949 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 131,647,708 | (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