2011 Confidence Interval Detail
250/Wood
250-907/Winnsboro ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 33,803,781 | 1.0009 | 33,773,385 | 18 | 756 | .057202838 |
| A | 34,057,835 | 0.9470 | 35,963,923 | 15 | 430 | .043455974 |
| A | 34,573,360 | 0.9864 | 35,050,041 | 17 | 302 | .009272208 |
| A | 34,464,965 | 1.0305 | 33,444,896 | 10 | 180 | .015437375 |
| D3 | 102,637,828 | 1.0576 | 97,047,871 | 21 | 3,754 | .050901718 |
| F1 | 9,513,081 | 0.8515 | 11,172,144 | 9 | 126 | .043267590 |
| F1 | 8,523,720 | 0.9530 | 8,944,092 | 8 | 42 | .004876836 |
| F1 | 9,637,500 | 0.9135 | 10,550,082 | 7 | 18 | .008125473 |
| F1 | 8,223,210 | 1.0309 | 7,976,729 | 4 | 5 | .054331125 |
| Random Totals: | 275,435,280 | 273,923,163 | 109 | 5,613 | ||
| Catg D1 Exception Values: | 10,373,896 | 7,852,414 | ||||
| Total Test Values (4): | 285,809,176 | 281,775,577 |
Margin of Error
| Margin of Error Percent: | 5.0000001 |
|---|---|
| Margin of Error Value: | 14,088,779 |
Confidence Interval Values (5)
| State Lower Limit: | 267,686,798 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 285,809,176 | (Within Confidence Interval) |
| State Upper Limit: | 295,864,356 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 316,751,249 | (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