2006 Confidence Interval Detail
227/Travis
227-910/Del Valle ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 183,152,806 | 1.0146 | 180,517,254 | 48 | 2,345 | .030181091 |
| A | 183,094,305 | 1.0003 | 183,039,393 | 47 | 1,520 | .004826658 |
| A | 183,074,185 | 0.9887 | 185,166,567 | 61 | 1,243 | .003014646 |
| A | 182,961,561 | 1.0099 | 181,167,998 | 54 | 853 | .002292176 |
| B | 77,993,992 | 1.0819 | 72,089,835 | 6 | 87 | .024069724 |
| B | 70,295,066 | 0.9650 | 72,844,628 | 4 | 7 | .002818406 |
| B | 88,311,358 | 0.9968 | 88,594,862 | 3 | 5 | .005880115 |
| D3 | 161,363,590 | 0.9813 | 164,438,592 | 23 | 3,717 | .004274881 |
| F1 | 103,870,137 | 1.0356 | 100,299,476 | 7 | 196 | .032128189 |
| F1 | 104,923,119 | 0.9802 | 107,042,562 | 6 | 46 | .012236551 |
| F1 | 109,223,307 | 0.9584 | 113,964,218 | 6 | 19 | .003576382 |
| L1 | 104,851,773 | 0.9879 | 106,136,019 | 7 | 256 | .013464208 |
| L1 | 106,359,047 | 0.9625 | 110,502,906 | 6 | 51 | .018672874 |
| L1 | 105,616,051 | 0.9439 | 111,893,263 | 5 | 18 | .002402729 |
| L1 | 98,738,450 | 1.0226 | 96,556,278 | 3 | 5 | .001681793 |
| Random Totals: | 1,863,828,747 | 1,874,253,851 | 286 | 10,368 | ||
| Catg D1 Exception Values: | 9,271,378 | 8,924,149 | ||||
| Catg B Exception Values: | 52,972,272 | 54,823,475 | ||||
| Catg F1 Exception Values: | 74,348,883 | 70,769,452 | ||||
| Total Test Values (4): | 2,000,421,280 | 2,008,770,927 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 100,438,546 |
Confidence Interval Values (5)
| State Lower Limit: | 1,908,332,381 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 2,000,421,280 | (Within Confidence Interval) |
| State Upper Limit: | 2,109,209,473 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 2,550,513,616 | (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