2008 Confidence Interval Detail
246/Williamson
246-914/Coupland ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 3,955,150 | 0.9498 | 4,164,192 | 9 | 58 | .042134463 |
| A | 3,040,808 | 1.0106 | 3,008,914 | 6 | 32 | .007500885 |
| A | 4,093,913 | 0.9695 | 4,222,706 | 8 | 32 | .006294422 |
| A | 4,153,659 | 0.9484 | 4,379,649 | 6 | 20 | .003367466 |
| D3 | 24,458,991 | 0.9756 | 25,070,716 | 20 | 771 | .009141036 |
| Random Totals: | 39,702,521 | 40,846,177 | 49 | 913 | ||
| Catg J Exception Values: | 4,738,451 | 4,681,952 | ||||
| Catg D1 Exception Values: | 4,957,735 | 4,256,934 | ||||
| Catg F1 Exception Values: | 2,797,608 | 2,684,157 | ||||
| Total Test Values (4): | 52,196,315 | 52,469,220 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 2,623,461 |
Confidence Interval Values (5)
| State Lower Limit: | 49,845,759 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 52,196,315 | (Within Confidence Interval) |
| State Upper Limit: | 55,092,681 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 50,315,018 | (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