2011 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 | 16,182,295 | 0.9077 | 17,827,801 | 13 | 230 | .022594444 |
| A | 13,133,930 | 0.9579 | 13,711,170 | 12 | 101 | .013473948 |
| A | 15,143,360 | 0.9453 | 16,019,634 | 12 | 75 | .027598349 |
| A | 11,336,483 | 1.0133 | 11,187,687 | 14 | 38 | .004065035 |
| D3 | 45,895,121 | 0.9050 | 50,712,841 | 15 | 1,606 | .186591689 |
| Random Totals: | 101,691,189 | 109,459,133 | 66 | 2,050 | ||
| Catg D1 Exception Values: | 3,098,687 | 2,507,718 | ||||
| Total Test Values (4): | 104,789,876 | 111,966,851 |
Margin of Error
| Margin of Error Percent: | 10.2486896 |
|---|---|
| Margin of Error Value: | 11,475,135 |
Confidence Interval Values (5)
| State Lower Limit: | 100,491,716 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 104,789,876 | (Within Confidence Interval) |
| State Upper Limit: | 123,441,986 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 102,998,945 | (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