2007 Confidence Interval Detail
070/Ellis
070-905/Ferris ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 48,956,018 | 0.8870 | 55,192,805 | 9 | 3,370 | .033667681 |
| A | 48,853,165 | 0.9018 | 54,172,949 | 9 | 1,925 | .059757324 |
| A | 48,931,475 | 0.8497 | 57,586,766 | 9 | 1,311 | .061136833 |
| A | 48,865,220 | 0.9795 | 49,887,922 | 8 | 790 | .006601126 |
| D3 | 42,665,120 | 0.9132 | 46,720,456 | 21 | 1,603 | .061656552 |
| F1 | 4,977,629 | 0.9205 | 5,407,527 | 9 | 52 | .016989295 |
| F1 | 5,024,689 | 0.8647 | 5,810,904 | 9 | 18 | .069010496 |
| F1 | 5,544,307 | 0.8938 | 6,203,073 | 2 | 7 | .082407856 |
| Random Totals: | 253,817,623 | 280,982,402 | 76 | 9,076 | ||
| Catg D1 Exception Values: | 4,981,400 | 5,408,395 | ||||
| Catg F1 Exception Values: | 6,096,100 | 6,096,100 | ||||
| Total Test Values (4): | 264,895,123 | 292,486,897 |
Margin of Error
| Margin of Error Percent: | 5.4053156 |
|---|---|
| Margin of Error Value: | 15,809,840 |
Confidence Interval Values (5)
| Local Test Value: | 264,895,123 | (Outside Confidence Interval) |
|---|---|---|
| State Lower Limit: | 276,677,057 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 308,296,737 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 298,261,099 | (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