2006 Confidence Interval Detail
187/Polk
187-901/Big Sandy ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 6,704,206 | 0.9707 | 6,906,568 | 7 | 291 | .221219105 |
| A | 6,704,277 | 0.9457 | 7,089,222 | 7 | 141 | .007500821 |
| A | 6,767,031 | 1.0538 | 6,421,552 | 11 | 82 | .012466189 |
| A | 6,636,557 | 1.0284 | 6,453,284 | 14 | 44 | .004155049 |
| D3 | 13,474,150 | 1.0291 | 13,093,140 | 14 | 1,267 | .005941433 |
| G1 | 55,245,770 | 0.9297 | 59,423,223 | 5 | 14 | .003672004 |
| G1 | 48,412,750 | 1.0063 | 48,109,659 | 4 | 7 | .015483089 |
| G1 | 51,299,130 | 0.9726 | 52,744,324 | 3 | 6 | .000410471 |
| G1 | 50,988,550 | 0.9676 | 52,695,897 | 2 | 3 | .001746410 |
| Random Totals: | 246,232,421 | 252,936,869 | 67 | 1,855 | ||
| Catg D1 Exception Values: | 20,253,655 | 19,592,684 | ||||
| Total Test Values (4): | 266,486,076 | 272,529,553 |
Margin of Error
| Margin of Error Percent: | 5.0000001 |
|---|---|
| Margin of Error Value: | 13,626,478 |
Confidence Interval Values (5)
| State Lower Limit: | 258,903,075 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 266,486,076 | (Within Confidence Interval) |
| State Upper Limit: | 286,156,031 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 270,732,960 | (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