2006 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 | 3,644,808 | 0.9983 | 3,651,015 | 7 | 57 | .010199485 |
| A | 3,609,744 | 1.0180 | 3,545,917 | 8 | 38 | .009689380 |
| A | 3,559,643 | 0.9773 | 3,642,324 | 6 | 27 | .001082748 |
| A | 3,552,843 | 0.9904 | 3,587,281 | 6 | 18 | .001680062 |
| D3 | 21,834,866 | 1.0145 | 21,522,786 | 24 | 759 | .020957193 |
| Random Totals: | 36,201,904 | 35,949,323 | 51 | 899 | ||
| Catg J Exception Values: | 4,836,990 | 4,812,769 | ||||
| Catg D1 Exception Values: | 4,558,560 | 4,613,918 | ||||
| Total Test Values (4): | 45,597,454 | 45,376,010 |
Margin of Error
| Margin of Error Percent: | 5.0000011 |
|---|---|
| Margin of Error Value: | 2,268,801 |
Confidence Interval Values (5)
| State Lower Limit: | 43,107,209 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 45,597,454 | (Within Confidence Interval) |
| State Upper Limit: | 47,644,811 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 45,931,698 | (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