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Williamson County
2020 Confidence Interval Detail
Williamson County
014-902/Bartlett ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 8,091,326 | 0.9214 | 8,781,556 | 16 | 145 | 0.109114615 |
| A | 8,657,149 | 0.9463 | 9,148,419 | 16 | 90 | 0.051993036 |
| A | 9,170,150 | 0.9553 | 9,599,236 | 17 | 72 | 0.031298301 |
| A | 9,764,615 | 0.7689 | 12,699,460 | 15 | 50 | 0.034257764 |
| E | 9,817,539 | 0.9015 | 10,890,226 | 13 | 166 | 0.092142493 |
| F1 | 5,752,508 | 0.9838 | 5,847,233 | 10 | 41 | 0.004583347 |
| Random Totals: | 51,253,287 | 56,966,130 | 87 | 564 | ||
| CATG D1 EXCEPTION VALUES: | 3,324,228 | 4,271,093 | ||||
| CATG J EXCEPTION VALUES: | 3,313,533 | 3,573,877 | ||||
| Total Test Values | 57,891,048 | 64,811,100 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 3,240,555 |
Confidence Interval Values(5)
| Local Test Value: | 57,891,048 | OUTSIDE CONFIDENCE INTERVAL |
|---|---|---|
| State Lower Limit: | 61,570,545 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 68,051,655 | (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