2009 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 | 13,925,060 | 0.9726 | 14,317,356 | 10 | 233 | .024434352 |
| A | 13,764,992 | 0.9293 | 14,812,216 | 8 | 138 | .037970324 |
| A | 9,267,556 | 1.0288 | 9,008,122 | 8 | 67 | .006729114 |
| A | 13,584,993 | 0.9603 | 14,146,614 | 8 | 59 | .002521426 |
| D3 | 71,035,097 | 1.0175 | 69,813,363 | 27 | 2,424 | .030177571 |
| Random Totals: | 121,577,698 | 122,097,671 | 61 | 2,921 | ||
| Catg J Exception Values: | 9,170,625 | 9,255,219 | ||||
| Catg D1 Exception Values: | 20,730,494 | 15,813,971 | ||||
| Total Test Values (4): | 151,478,817 | 147,166,861 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 7,358,343 |
Confidence Interval Values (5)
| State Lower Limit: | 139,808,518 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 151,478,817 | (Within Confidence Interval) |
| State Upper Limit: | 154,525,204 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 157,211,313 | (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