2007 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 | 38,405,696 | 0.9325 | 41,185,733 | 21 | 987 | .059302802 |
| A | 38,357,720 | 0.8739 | 43,892,574 | 22 | 535 | .057678759 |
| A | 38,383,908 | 0.9523 | 40,306,529 | 13 | 369 | .009855489 |
| A | 38,328,265 | 0.9764 | 39,254,675 | 18 | 213 | .014474590 |
| D3 | 116,628,501 | 0.8555 | 136,327,880 | 22 | 2,471 | .029797842 |
| F1 | 9,486,027 | 1.0157 | 9,339,398 | 7 | 149 | .090545623 |
| F1 | 9,552,376 | 0.8044 | 11,875,157 | 8 | 53 | .061542579 |
| F1 | 10,038,967 | 0.7294 | 13,763,322 | 5 | 24 | .070782513 |
| F1 | 8,816,153 | 0.7593 | 11,610,896 | 4 | 8 | .049860281 |
| G1 | 4,810,260 | 1.0375 | 4,636,395 | 4 | 9 | .004593137 |
| G1 | 5,238,829 | 1.0989 | 4,767,339 | 3 | 5 | .054549711 |
| G1 | 5,725,080 | 1.2355 | 4,633,816 | 2 | 3 | .031849468 |
| Random Totals: | 323,771,782 | 361,593,714 | 129 | 4,826 | ||
| Catg D1 Exception Values: | 13,581,808 | 9,181,089 | ||||
| Catg G1 Exception Values: | 19,660,890 | 19,504,948 | ||||
| Total Test Values (4): | 357,014,480 | 390,279,751 |
Margin of Error
| Margin of Error Percent: | 5.0000001 |
|---|---|
| Margin of Error Value: | 19,513,988 |
Confidence Interval Values (5)
| Local Test Value: | 357,014,480 | (Outside Confidence Interval) |
|---|---|---|
| State Lower Limit: | 370,765,763 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 409,793,739 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 386,612,238 | (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