2007 Confidence Interval Detail
101/Harris
101-921/Tomball ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 606,700,617 | 0.9876 | 614,318,162 | 66 | 4,534 | .003937999 |
| A | 607,424,669 | 0.9976 | 608,885,995 | 74 | 3,166 | .004056559 |
| A | 606,015,948 | 0.9804 | 618,131,322 | 79 | 2,445 | .004035363 |
| A | 606,336,935 | 0.9763 | 621,055,961 | 56 | 1,480 | .004484305 |
| C | 39,712,328 | 0.8001 | 49,634,206 | 7 | 2,036 | .094706386 |
| C | 39,754,068 | 0.9565 | 41,562,016 | 8 | 1,051 | .019978003 |
| C | 39,787,187 | 0.6038 | 65,894,646 | 14 | 388 | .489359443 |
| C | 39,550,822 | 0.7327 | 53,979,558 | 11 | 98 | .124364455 |
| F1 | 202,342,986 | 0.8563 | 236,299,178 | 9 | 333 | .051361461 |
| F1 | 209,678,040 | 0.9572 | 219,053,531 | 9 | 78 | .002230509 |
| F1 | 393,580,922 | 0.9997 | 393,699,032 | 7 | 21 | .001396064 |
| L1 | 49,794,227 | 0.7095 | 70,182,138 | 8 | 782 | .555711094 |
| L1 | 50,405,881 | 0.9815 | 51,355,966 | 8 | 149 | .003057941 |
| L1 | 53,535,488 | 0.9526 | 56,199,337 | 7 | 37 | .030748223 |
| L1 | 48,331,396 | 0.9536 | 50,683,091 | 4 | 8 | .004279219 |
| Random Totals: | 3,592,951,514 | 3,750,934,139 | 367 | 16,606 | ||
| Catg D1 Exception Values: | 9,538,988 | 9,307,357 | ||||
| Total Test Values (4): | 3,602,490,502 | 3,760,241,496 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 188,012,075 |
Confidence Interval Values (5)
| State Lower Limit: | 3,572,229,421 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 3,602,490,502 | (Within Confidence Interval) |
| State Upper Limit: | 3,948,253,571 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 4,147,331,659 | (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