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Williamson County
2020 Confidence Interval Detail
Williamson County
166-905/Thorndale ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 4,305,235 | 1.0318 | 4,172,548 | 13 | 25 | 0.027385242 |
| E | 14,782,897 | 0.9395 | 15,734,856 | 20 | 125 | 0.029959410 |
| Random Totals: | 19,088,132 | 19,907,404 | 33 | 150 | ||
| CATG D1 EXCEPTION VALUES: | 1,204,758 | 1,364,271 | ||||
| CATG J EXCEPTION VALUES: | 1,013,362 | 1,124,756 | ||||
| Total Test Values | 21,306,252 | 22,396,431 |
Margin of Error
| Margin of Error Percent: | 5.2129859 |
|---|---|
| Margin of Error Value: | 1,167,523 |
Confidence Interval Values(5)
| Local Test Value: | 21,306,252 | WITHIN CONFIDENCE INTERVAL |
|---|---|---|
| State Lower Limit: | 21,228,908 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 23,563,954 | (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