2011 Confidence Interval Detail
212/Smith
212-909/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 | 148,472,412 | 0.8825 | 168,240,693 | 24 | 1,933 | .022323504 |
| A | 147,087,159 | 0.9372 | 156,943,191 | 27 | 920 | .018829919 |
| A | 148,303,725 | 0.9795 | 151,407,580 | 26 | 587 | .007922850 |
| A | 146,962,948 | 1.0191 | 144,208,564 | 15 | 296 | .010724428 |
| B | 14,123,280 | 0.9846 | 14,344,180 | 11 | 45 | .000228463 |
| D3 | 136,495,621 | 0.9976 | 136,823,999 | 35 | 5,610 | .242190067 |
| F1 | 19,315,035 | 0.8702 | 22,196,087 | 9 | 129 | .052954429 |
| F1 | 18,744,061 | 0.8497 | 22,059,622 | 8 | 45 | .043088884 |
| F1 | 20,706,130 | 0.8442 | 24,527,517 | 7 | 21 | .093950691 |
| F1 | 19,289,242 | 0.9563 | 20,170,702 | 3 | 4 | .025718782 |
| L1 | 22,005,430 | 0.9916 | 22,191,841 | 9 | 117 | .003902639 |
| L1 | 44,504,397 | 0.9931 | 44,813,611 | 9 | 18 | .001394494 |
| Random Totals: | 886,009,440 | 927,927,587 | 183 | 9,725 | ||
| Catg D1 Exception Values: | 11,823,332 | 8,511,287 | ||||
| Catg B Exception Values: | 55,504,276 | 56,926,957 | ||||
| Total Test Values (4): | 953,337,048 | 993,365,831 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 49,668,292 |
Confidence Interval Values (5)
| State Lower Limit: | 943,697,539 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 953,337,048 | (Within Confidence Interval) |
| State Upper Limit: | 1,043,034,123 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 1,080,020,935 | (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