2007 Confidence Interval Detail
101/Harris
101-919/Spring ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 1,105,127,936 | 1.0005 | 1,104,575,648 | 69 | 10,865 | .004917205 |
| A | 1,100,854,617 | 0.9989 | 1,102,066,891 | 69 | 8,668 | .003466306 |
| A | 1,102,849,276 | 0.9875 | 1,116,809,393 | 70 | 7,088 | .002381333 |
| A | 1,102,618,100 | 0.9936 | 1,109,720,310 | 90 | 4,796 | .008700107 |
| B | 168,620,925 | 0.8099 | 208,199,685 | 7 | 35 | .100424751 |
| B | 175,609,469 | 0.9281 | 189,213,952 | 5 | 24 | .017218140 |
| B | 169,595,736 | 1.0151 | 167,072,935 | 5 | 16 | .001034609 |
| B | 160,132,675 | 0.9330 | 171,632,020 | 6 | 10 | .002248437 |
| F1 | 360,532,049 | 0.9043 | 398,686,331 | 11 | 495 | .047337673 |
| F1 | 362,224,771 | 0.7792 | 464,867,519 | 11 | 160 | .252088433 |
| F1 | 366,289,372 | 0.9336 | 392,340,801 | 8 | 72 | .006251791 |
| F1 | 346,314,908 | 0.8603 | 402,551,329 | 8 | 29 | .046776192 |
| L1 | 131,401,694 | 1.0077 | 130,397,632 | 9 | 1,447 | .023114387 |
| L1 | 132,551,894 | 0.9461 | 140,103,471 | 7 | 195 | .002193864 |
| L1 | 135,394,200 | 0.9113 | 148,572,589 | 6 | 58 | .022183719 |
| L1 | 130,851,809 | 0.9680 | 135,177,489 | 6 | 15 | .001828512 |
| Random Totals: | 7,050,969,431 | 7,381,987,995 | 387 | 33,973 | ||
| Catg D1 Exception Values: | 9,445,904 | 9,426,532 | ||||
| Total Test Values (4): | 7,060,415,335 | 7,391,414,527 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 369,570,726 |
Confidence Interval Values (5)
| State Lower Limit: | 7,021,843,801 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 7,060,415,335 | (Within Confidence Interval) |
| State Upper Limit: | 7,760,985,253 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 7,685,407,632 | (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