2007 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 | 12,920,640 | 0.9032 | 14,305,403 | 15 | 185 | .018055709 |
| A | 12,800,323 | 0.9997 | 12,804,164 | 15 | 96 | .008191137 |
| A | 12,843,824 | 0.9577 | 13,411,114 | 15 | 62 | .011222637 |
| A | 12,714,188 | 1.0269 | 12,381,135 | 14 | 40 | .003177580 |
| D3 | 35,076,358 | 0.9203 | 38,114,048 | 20 | 1,424 | .073095216 |
| Random Totals: | 86,355,333 | 91,015,864 | 79 | 1,807 | ||
| Catg J Exception Values: | 3,554,936 | 3,323,171 | ||||
| Catg D1 Exception Values: | 3,107,674 | 2,518,810 | ||||
| Total Test Values (4): | 93,017,943 | 96,857,845 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 4,842,892 |
Confidence Interval Values (5)
| State Lower Limit: | 92,014,953 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 93,017,943 | (Within Confidence Interval) |
| State Upper Limit: | 101,700,737 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 88,107,890 | (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