2007 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 | 281,432,992 | 0.9796 | 287,293,785 | 13 | 6,158 | .014211099 |
| A | 281,162,326 | 0.8847 | 317,805,274 | 16 | 4,080 | .012793371 |
| A | 281,196,264 | 0.9343 | 300,969,993 | 19 | 2,988 | .023221890 |
| A | 281,100,092 | 0.9744 | 288,485,316 | 9 | 1,844 | .006996712 |
| B | 36,118,341 | 0.9385 | 38,485,180 | 7 | 235 | .016308753 |
| B | 36,106,878 | 0.9745 | 37,051,696 | 7 | 143 | .001024292 |
| B | 35,856,509 | 0.9995 | 35,874,446 | 7 | 84 | .026274527 |
| B | 35,742,799 | 0.9612 | 37,185,600 | 6 | 36 | .000708497 |
| F1 | 152,023,502 | 0.9241 | 164,509,795 | 6 | 993 | .003841724 |
| F1 | 152,108,944 | 0.9722 | 156,458,490 | 7 | 346 | .005268153 |
| F1 | 152,338,011 | 0.9630 | 158,191,081 | 7 | 124 | .000669189 |
| F1 | 150,822,203 | 0.9832 | 153,399,311 | 4 | 9 | .001099938 |
| L1 | 43,532,779 | 0.9974 | 43,646,259 | 8 | 841 | .002851914 |
| L1 | 43,675,970 | 1.0543 | 41,426,510 | 7 | 210 | .005732735 |
| L1 | 43,743,171 | 0.9429 | 46,392,164 | 6 | 66 | .023233054 |
| L1 | 42,828,900 | 0.9540 | 44,894,025 | 4 | 12 | .004363179 |
| Random Totals: | 2,049,789,681 | 2,152,068,925 | 133 | 18,169 | ||
| Catg D1 Exception Values: | 1,570 | 2,074 | ||||
| Total Test Values (4): | 2,049,791,251 | 2,152,070,999 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 107,603,550 |
Confidence Interval Values (5)
| State Lower Limit: | 2,044,467,449 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 2,049,791,251 | (Within Confidence Interval) |
| State Upper Limit: | 2,259,674,549 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 2,033,691,119 | (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