2009 Confidence Interval Detail
062/Dewitt
062-905/Westhoff ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 521,500 | 0.9226 | 565,250 | 7 | 37 | .041661412 |
| A | 445,270 | 1.0729 | 415,015 | 5 | 14 | .008780082 |
| A | 565,630 | 0.9324 | 606,639 | 4 | 13 | .014579474 |
| A | 494,580 | 1.0721 | 461,319 | 5 | 8 | .007948780 |
| D3 | 10,152,490 | 0.9627 | 10,545,850 | 16 | 1,018 | .029577025 |
| G1 | 641,351 | 1.0126 | 633,371 | 3 | 5 | .000005171 |
| Random Totals: | 12,820,821 | 13,227,444 | 40 | 1,095 | ||
| Catg J Exception Values: | 428,975 | 427,624 | ||||
| Catg D1 Exception Values: | 3,179,180 | 2,994,417 | ||||
| Catg G1 Exception Values: | 907,209 | 891,330 | ||||
| Total Test Values (4): | 17,336,185 | 17,540,815 |
Margin of Error
| Margin of Error Percent: | 5.2416607 |
|---|---|
| Margin of Error Value: | 919,430 |
Confidence Interval Values (5)
| State Lower Limit: | 16,621,385 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 17,336,185 | (Within Confidence Interval) |
| State Upper Limit: | 18,460,245 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 29,334,693 | (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