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246/Williamson
2018 Confidence Interval Detail
246/Williamson
246-914/Coupland ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 4,859,003 | 1.0044 | 4,837,717 | 15 | 61 | .056754322 |
| A | 6,019,323 | 1.1763 | 5,117,167 | 15 | 47 | .071135770 |
| A | 5,817,305 | 1.1349 | 5,125,830 | 13 | 31 | .026321055 |
| A | 8,678,666 | 1.0645 | 8,152,810 | 9 | 27 | .008754410 |
| E | 43,298,925 | 1.0446 | 41,450,244 | 26 | 396 | .023124340 |
| Random Totals: | 68,673,222 | 64,683,768 | 78 | 562 | ||
| Catg J Exception Values: | 2,746,863 | 3,090,853 | ||||
| Catg D1 Exception Values: | 5,429,531 | 6,128,234 | ||||
| Total Test Values (4): | 76,849,616 | 73,902,855 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 3,695,142 |
Confidence Interval Values (5)
| State Lower Limit: | 70,207,713 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 76,849,616 | (Within Confidence Interval) |
| State Upper Limit: | 77,597,997 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 78,989,125 | (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, 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
(6) Includes local value of unstudied property categories and sub-categories