2006 Confidence Interval Detail
225/Titus
225-906/Chapel Hill ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 11,550,169 | 0.8388 | 13,769,872 | 15 | 185 | .045136526 |
| A | 11,442,614 | 0.9432 | 12,131,694 | 16 | 96 | .023387853 |
| A | 11,481,501 | 0.9270 | 12,385,654 | 15 | 62 | .015064406 |
| A | 11,365,615 | 0.9127 | 12,452,739 | 14 | 40 | .017226203 |
| D3 | 30,555,361 | 0.7913 | 38,614,130 | 22 | 31,246 | .132108787 |
| Random Totals: | 76,395,260 | 89,354,089 | 82 | 31,629 | ||
| Catg J Exception Values: | 3,243,965 | 3,712,239 | ||||
| Catg D1 Exception Values: | 3,109,077 | 2,632,576 | ||||
| Total Test Values (4): | 82,748,302 | 95,698,904 |
Margin of Error
| Margin of Error Percent: | 6.5400394 |
|---|---|
| Margin of Error Value: | 6,258,746 |
Confidence Interval Values (5)
| Local Test Value: | 82,748,302 | (Outside Confidence Interval) |
|---|---|---|
| State Lower Limit: | 89,440,158 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 101,957,650 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 81,132,134 | (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