2008 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 | 11,234,861 | 0.9406 | 11,944,356 | 7 | 204 | .043568794 |
| A | 11,908,051 | 0.9740 | 12,225,925 | 9 | 129 | .025985991 |
| A | 12,710,322 | 0.9649 | 13,172,683 | 7 | 104 | .004008205 |
| A | 18,355,428 | 1.0088 | 18,195,309 | 7 | 91 | .002578778 |
| D3 | 70,563,233 | 0.9645 | 73,160,428 | 26 | 2,409 | .116092537 |
| Random Totals: | 124,771,895 | 128,698,701 | 56 | 2,937 | ||
| Catg J Exception Values: | 9,637,109 | 9,587,054 | ||||
| Catg D1 Exception Values: | 17,791,986 | 15,227,176 | ||||
| Total Test Values (4): | 152,200,990 | 153,512,931 |
Margin of Error
| Margin of Error Percent: | 6.5439536 |
|---|---|
| Margin of Error Value: | 10,045,815 |
Confidence Interval Values (5)
| State Lower Limit: | 143,467,116 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 152,200,990 | (Within Confidence Interval) |
| State Upper Limit: | 163,558,746 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 152,197,952 | (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