2008 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 | 6,738,289 | 0.7734 | 8,712,554 | 7 | 291 | .014198038 |
| A | 7,503,359 | 0.7647 | 9,812,160 | 12 | 162 | .400927110 |
| A | 6,981,310 | 0.8988 | 7,767,368 | 10 | 92 | .003872040 |
| A | 7,759,810 | 0.9431 | 8,227,982 | 10 | 60 | .013171869 |
| D3 | 15,650,168 | 1.0137 | 15,438,658 | 11 | 1,249 | .103701945 |
| G1 | 51,397,140 | 0.9470 | 54,273,643 | 5 | 16 | .076602566 |
| G1 | 53,463,200 | 0.9423 | 56,736,920 | 4 | 10 | .010943718 |
| G1 | 52,574,550 | 0.9937 | 52,907,870 | 4 | 7 | .006689870 |
| G1 | 42,455,570 | 0.9328 | 45,514,119 | 3 | 4 | .009970094 |
| Random Totals: | 244,523,396 | 259,391,274 | 66 | 1,891 | ||
| Catg D1 Exception Values: | 18,566,285 | 18,455,280 | ||||
| Total Test Values (4): | 263,089,681 | 277,846,554 |
Margin of Error
| Margin of Error Percent: | 5.0000001 |
|---|---|
| Margin of Error Value: | 13,892,328 |
Confidence Interval Values (5)
| Local Test Value: | 263,089,681 | (Outside Confidence Interval) |
|---|---|---|
| State Lower Limit: | 263,954,226 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 291,738,882 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 312,800,320 | (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