2010 Confidence Interval Detail
246/Williamson
246-912/Thrall ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 13,317,388 | 0.9561 | 13,928,865 | 11 | 236 | .033208969 |
| A | 12,194,851 | 0.8557 | 14,251,316 | 9 | 127 | .013796663 |
| A | 12,999,371 | 0.9734 | 13,354,603 | 9 | 97 | .005232599 |
| A | 15,152,743 | 0.9698 | 15,624,606 | 8 | 63 | .002573099 |
| D3 | 77,394,715 | 1.0380 | 74,561,382 | 26 | 2,448 | .111496314 |
| Random Totals: | 131,059,068 | 131,720,772 | 63 | 2,971 | ||
| Catg J Exception Values: | 9,461,802 | 10,094,263 | ||||
| Catg D1 Exception Values: | 21,989,194 | 18,836,576 | ||||
| Total Test Values (4): | 162,510,064 | 160,651,611 |
Margin of Error
| Margin of Error Percent: | 6.1747000 |
|---|---|
| Margin of Error Value: | 9,919,755 |
Confidence Interval Values (5)
| State Lower Limit: | 150,731,856 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 162,510,064 | (Within Confidence Interval) |
| State Upper Limit: | 170,571,366 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 167,522,697 | (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