2009 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 | 31,346,651 | 1.0502 | 29,848,268 | 23 | 748 | .028400551 |
| A | 30,797,830 | 1.0179 | 30,256,243 | 21 | 413 | .030700428 |
| A | 34,492,810 | 0.9819 | 35,128,638 | 18 | 321 | .007862216 |
| A | 37,766,675 | 0.9314 | 40,548,288 | 16 | 208 | .016431597 |
| D3 | 101,207,341 | 1.0140 | 99,810,001 | 36 | 3,781 | .053215215 |
| F1 | 8,320,641 | 0.8803 | 9,452,052 | 9 | 125 | .138856510 |
| F1 | 7,637,670 | 0.8554 | 8,928,770 | 7 | 48 | .078271904 |
| F1 | 9,310,350 | 0.9648 | 9,650,031 | 7 | 29 | .029791852 |
| F1 | 10,479,940 | 0.9544 | 10,980,658 | 6 | 10 | .004357250 |
| G1 | 14,903,079 | 0.9939 | 14,994,546 | 7 | 49 | .049770944 |
| L1 | 4,032,920 | 0.9808 | 4,111,868 | 7 | 116 | .001912746 |
| L1 | 5,307,690 | 0.9355 | 5,673,640 | 6 | 34 | .017345132 |
| L1 | 3,011,140 | 0.9919 | 3,035,729 | 4 | 5 | .000825735 |
| Random Totals: | 298,614,737 | 302,418,732 | 167 | 5,887 | ||
| Catg D1 Exception Values: | 10,374,982 | 8,286,244 | ||||
| Catg G1 Exception Values: | 3,815,680 | 3,550,064 | ||||
| Catg L1 Exception Values: | 3,960,400 | 4,008,104 | ||||
| Total Test Values (4): | 316,765,799 | 318,263,144 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 15,913,157 |
Confidence Interval Values (5)
| State Lower Limit: | 302,349,987 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 316,765,799 | (Within Confidence Interval) |
| State Upper Limit: | 334,176,301 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 312,182,394 | (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