2011 Confidence Interval Detail
240/Webb
240-901/Laredo ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 307,664,139 | 1.0435 | 294,838,657 | 38 | 6,089 | .068646666 |
| A | 313,445,531 | 1.1039 | 283,943,773 | 30 | 4,169 | .053039813 |
| A | 308,559,410 | 1.0624 | 290,436,192 | 21 | 2,997 | .061741697 |
| A | 319,133,612 | 1.1019 | 289,621,211 | 21 | 1,865 | .033178453 |
| B | 42,886,675 | 1.0922 | 39,266,320 | 12 | 287 | .015889925 |
| B | 41,035,780 | 1.0566 | 38,837,573 | 14 | 176 | .036426984 |
| B | 42,956,960 | 1.0301 | 41,701,738 | 11 | 109 | .027869301 |
| B | 42,694,008 | 0.9835 | 43,410,278 | 8 | 46 | .002702219 |
| F1 | 167,875,440 | 1.0222 | 164,229,544 | 19 | 1,100 | .175701163 |
| F1 | 164,876,537 | 0.8867 | 185,943,991 | 15 | 381 | .162045202 |
| F1 | 161,114,708 | 1.1070 | 145,541,742 | 10 | 146 | .046506225 |
| F1 | 149,190,133 | 0.9941 | 150,075,579 | 5 | 11 | .007428552 |
| L1 | 39,923,030 | 1.0288 | 38,805,434 | 10 | 769 | .012442157 |
| L1 | 42,698,350 | 1.0118 | 42,200,385 | 9 | 189 | .001793132 |
| L1 | 48,447,160 | 0.9498 | 51,007,749 | 8 | 59 | .034749914 |
| L1 | 29,799,550 | 0.8952 | 33,288,148 | 5 | 6 | .000984403 |
| Random Totals: | 2,222,301,023 | 2,133,148,314 | 236 | 18,399 | ||
| Catg D1 Exception Values: | 1,630 | 2,884 | ||||
| Total Test Values (4): | 2,222,302,653 | 2,133,151,198 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 106,657,560 |
Confidence Interval Values (5)
| State Lower Limit: | 2,026,493,638 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 2,222,302,653 | (Within Confidence Interval) |
| State Upper Limit: | 2,239,808,758 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 2,168,185,662 | (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