2009 Confidence Interval Detail
174/Nacogdoches
174-911/Douglass ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 10,133,330 | 0.9477 | 10,692,550 | 8 | 148 | .013303120 |
| A | 9,852,170 | 0.9837 | 10,015,421 | 6 | 70 | .003379064 |
| A | 14,114,600 | 0.9443 | 14,947,157 | 6 | 66 | .004567689 |
| A | 13,708,750 | 0.9561 | 14,338,197 | 8 | 42 | .002132085 |
| D3 | 32,217,820 | 1.0420 | 30,919,213 | 21 | 1,271 | .024037210 |
| G1 | 20,886,440 | 0.9940 | 21,012,515 | 7 | 82 | .011490374 |
| G1 | 21,479,490 | 0.9138 | 23,505,680 | 6 | 39 | .059390165 |
| G1 | 21,265,099 | 1.0144 | 20,963,229 | 5 | 22 | .001111696 |
| G1 | 19,851,830 | 1.0219 | 19,426,392 | 4 | 12 | .004589207 |
| Random Totals: | 163,509,529 | 165,820,354 | 71 | 1,752 | ||
| Catg J Exception Values: | 2,860,590 | 2,805,508 | ||||
| Catg D1 Exception Values: | 9,992,020 | 6,263,418 | ||||
| Total Test Values (4): | 176,362,139 | 174,889,280 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 8,744,464 |
Confidence Interval Values (5)
| State Lower Limit: | 166,144,816 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 176,362,139 | (Within Confidence Interval) |
| State Upper Limit: | 183,633,744 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 206,876,762 | (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