2011 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 | 7,888,191 | 1.1828 | 6,669,083 | 10 | 284 | .114503474 |
| A | 7,904,182 | 0.9596 | 8,236,955 | 10 | 140 | .010407996 |
| A | 7,887,098 | 0.9408 | 8,383,395 | 10 | 88 | .012966504 |
| A | 7,635,843 | 0.9336 | 8,178,924 | 10 | 51 | .010894926 |
| D3 | 18,779,496 | 0.9398 | 19,982,439 | 15 | 1,278 | .025940927 |
| G1 | 43,941,115 | 0.9745 | 45,090,934 | 7 | 25 | .033677442 |
| G1 | 45,132,660 | 0.9873 | 45,713,218 | 6 | 13 | .034330504 |
| G1 | 42,308,170 | 1.0274 | 41,179,842 | 3 | 5 | .001130407 |
| Random Totals: | 181,476,755 | 183,434,790 | 71 | 1,884 | ||
| Catg J Exception Values: | 9,881,910 | 8,531,439 | ||||
| Catg D1 Exception Values: | 16,995,689 | 15,746,783 | ||||
| Catg G1 Exception Values: | 43,629,250 | 43,482,686 | ||||
| Total Test Values (4): | 251,983,604 | 251,195,698 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 12,559,785 |
Confidence Interval Values (5)
| State Lower Limit: | 238,635,913 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 251,983,604 | (Within Confidence Interval) |
| State Upper Limit: | 263,755,483 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 251,478,446 | (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