2008 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 | 28,739,740 | 0.9112 | 31,540,540 | 24 | 727 | .068962051 |
| A | 31,076,300 | 0.9536 | 32,588,402 | 20 | 433 | .042514888 |
| A | 34,553,080 | 0.8488 | 40,708,153 | 16 | 332 | .028348718 |
| A | 31,767,000 | 0.9869 | 32,188,672 | 12 | 187 | .018764074 |
| D3 | 97,001,551 | 0.8834 | 109,804,789 | 28 | 3,805 | .084742713 |
| F1 | 8,597,530 | 0.9688 | 8,874,412 | 8 | 128 | .158844412 |
| F1 | 8,802,490 | 0.9129 | 9,642,338 | 7 | 52 | .011618736 |
| F1 | 8,613,090 | 1.1770 | 7,317,833 | 6 | 23 | .062822874 |
| F1 | 7,635,840 | 0.8974 | 8,508,848 | 4 | 7 | .026603975 |
| G1 | 26,001,599 | 1.0318 | 25,200,232 | 15 | 50 | .001888430 |
| Random Totals: | 282,788,220 | 306,374,219 | 140 | 5,744 | ||
| Catg D1 Exception Values: | 10,943,826 | 7,855,057 | ||||
| Total Test Values (4): | 293,732,046 | 314,229,276 |
Margin of Error
| Margin of Error Percent: | 5.0000001 |
|---|---|
| Margin of Error Value: | 15,711,464 |
Confidence Interval Values (5)
| Local Test Value: | 293,732,046 | (Outside Confidence Interval) |
|---|---|---|
| State Lower Limit: | 298,517,812 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 329,940,740 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 308,444,386 | (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