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246/Williamson
2018 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 | 18,864,711 | 1.0005 | 18,855,283 | 17 | 244 | 0.105980886 |
| A | 18,239,984 | 1.1235 | 16,234,966 | 16 | 137 | 0.113862291 |
| A | 28,258,757 | 1.1160 | 25,321,467 | 15 | 145 | 0.081647330 |
| A | 26,386,274 | 1.0483 | 25,170,537 | 15 | 78 | 0.041141510 |
| E | 133,917,474 | 1.0812 | 123,860,039 | 21 | 1112 | 0.079151657 |
| Random Totals: | 225,667,200 | 209,442,292 | 84 | 1,716 | ||
| CATG D1 EXCEPTION VALUES: | 20,010,882 | 22,517,592 | ||||
| CATG J EXCEPTION VALUES: | 8,068,787 | 8,702,134 | ||||
| Total Test Values(2) | 253,746,869 | 240,662,018 |
Margin of Error
| Margin of Error Percent: | 6.6657127 |
|---|---|
| Margin of Error Value: | 16,041,839 |
Confidence Interval Values(5)
| Local Test Value: | 253,746,869 | WITHIN CONFIDENCE INTERVAL |
|---|---|---|
| State Lower Limit: | 224,620,179 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 256,703,857 | (State Test Value plus Margin of Error Percent) |
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, D2, E, F1, G1, G2, or L1 marked as exception properties
(5) Unstudied categories and sub-categories were not included in the Confidence Interval Values