2009 Confidence Interval Detail
022/Brewster
022-901/Alpine ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 53,683,409 | 0.9347 | 57,433,839 | 6 | 889 | .093954727 |
| A | 61,540,165 | 0.8222 | 74,848,170 | 6 | 613 | .128749558 |
| A | 61,492,806 | 1.0864 | 56,602,362 | 7 | 415 | .001884898 |
| A | 60,490,699 | 0.9393 | 64,399,765 | 7 | 257 | .009484503 |
| D3 | 37,169,926 | 1.1754 | 31,623,214 | 12 | 6,728 | .396025881 |
| F1 | 12,868,278 | 0.9690 | 13,279,957 | 8 | 133 | .000263538 |
| F1 | 13,807,871 | 0.9861 | 14,002,506 | 6 | 50 | .000110196 |
| F1 | 12,733,770 | 0.9720 | 13,100,586 | 7 | 14 | .000383165 |
| F1 | 13,205,359 | 0.9827 | 13,437,834 | 2 | 4 | .000119440 |
| L1 | 5,060,296 | 0.9546 | 5,300,960 | 13 | 136 | .037163208 |
| L1 | 5,213,002 | 1.0096 | 5,163,433 | 9 | 25 | .007759561 |
| L1 | 5,515,438 | 1.0324 | 5,342,346 | 5 | 10 | .001775677 |
| L1 | 4,612,213 | 1.2317 | 3,744,591 | 2 | 2 | .036042697 |
| Random Totals: | 347,393,232 | 358,279,563 | 90 | 9,276 | ||
| Catg J Exception Values: | 19,092,336 | 18,616,430 | ||||
| Catg D1 Exception Values: | 17,643,700 | 22,499,687 | ||||
| Total Test Values (4): | 384,129,268 | 399,395,680 |
Margin of Error
| Margin of Error Percent: | 7.2156196 |
|---|---|
| Margin of Error Value: | 28,818,873 |
Confidence Interval Values (5)
| State Lower Limit: | 370,576,807 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 384,129,268 | (Within Confidence Interval) |
| State Upper Limit: | 428,214,553 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 367,139,046 | (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, D3, 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