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 | 23,003,222 | 0.9156 | 25,123,659 | 19 | 381 | .031919548 |
| A | 22,988,599 | 0.9410 | 24,429,967 | 16 | 238 | .015806663 |
| A | 22,924,849 | 0.9451 | 24,256,533 | 15 | 172 | .006473912 |
| A | 22,877,962 | 0.9764 | 23,430,932 | 15 | 115 | .012603981 |
| D3 | 40,697,934 | 0.9474 | 42,957,498 | 23 | 1,473 | .063777071 |
| Random Totals: | 132,492,566 | 140,198,589 | 88 | 2,379 | ||
| Catg D1 Exception Values: | 4,020,068 | 2,905,680 | ||||
| Total Test Values (4): | 136,512,634 | 143,104,269 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 7,155,213 |
Confidence Interval Values (5)
| State Lower Limit: | 135,949,056 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 136,512,634 | (Within Confidence Interval) |
| State Upper Limit: | 150,259,482 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 130,313,608 | (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