2006 Confidence Interval Detail
020/Brazoria
020-907/Columbia-Brazoria ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 121,089,428 | 0.9852 | 122,908,473 | 34 | 2,062 | .046563904 |
| A | 121,106,367 | 0.9678 | 125,135,738 | 31 | 1,279 | .013218206 |
| A | 120,968,565 | 0.9741 | 124,184,955 | 50 | 907 | .017741452 |
| A | 121,053,713 | 0.9792 | 123,625,115 | 28 | 553 | .005019795 |
| D3 | 58,226,340 | 0.9194 | 63,330,803 | 11 | 3,492 | .099007663 |
| F1 | 12,172,070 | 0.8472 | 14,367,410 | 7 | 183 | .014429754 |
| F1 | 12,288,691 | 0.9306 | 13,205,127 | 8 | 70 | .030065787 |
| F1 | 12,187,897 | 0.9567 | 12,739,518 | 8 | 25 | .021464901 |
| F1 | 11,986,175 | 0.8033 | 14,921,169 | 5 | 10 | .034461618 |
| G1 | 15,792,207 | 0.9800 | 16,114,497 | 8 | 32 | .005050296 |
| Random Totals: | 606,871,453 | 630,532,805 | 190 | 8,613 | ||
| Catg J Exception Values: | 36,723,103 | 38,841,413 | ||||
| Catg D1 Exception Values: | 8,844,820 | 9,877,370 | ||||
| Catg G1 Exception Values: | 14,538,189 | 16,382,498 | ||||
| Total Test Values (4): | 666,977,565 | 695,634,086 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 34,781,704 |
Confidence Interval Values (5)
| State Lower Limit: | 660,852,382 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 666,977,565 | (Within Confidence Interval) |
| State Upper Limit: | 730,415,790 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 664,486,570 | (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