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246/Williamson
2018 Confidence Interval Detail
246/Williamson
246-905/Granger ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 11,300,782 | 0.9311 | 12,137,023 | 17 | 193 | .147762179 |
| A | 16,440,602 | 0.9618 | 17,093,577 | 15 | 161 | .031141966 |
| A | 28,120,196 | 1.0590 | 26,553,537 | 17 | 182 | .025328783 |
| A | 26,929,218 | 1.0915 | 24,671,753 | 15 | 85 | .019656278 |
| E | 73,098,884 | 1.0625 | 68,798,950 | 21 | 600 | .077652670 |
| Random Totals: | 155,889,682 | 149,254,840 | 85 | 1,221 | ||
| Catg J Exception Values: | 8,261,322 | 9,346,414 | ||||
| Catg D1 Exception Values: | 15,694,510 | 18,015,440 | ||||
| Total Test Values (4): | 179,845,514 | 176,616,694 |
Margin of Error
| Margin of Error Percent: | 5.0664758 |
|---|---|
| Margin of Error Value: | 8,948,242 |
Confidence Interval Values (5)
| State Lower Limit: | 167,668,452 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 179,845,514 | (Within Confidence Interval) |
| State Upper Limit: | 185,564,936 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 163,441,932 | (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