2006 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 | 44,833,852 | 0.9642 | 46,498,498 | 17 | 687 | .055015083 |
| A | 44,778,028 | 1.0290 | 43,516,062 | 19 | 409 | .017614020 |
| A | 44,911,595 | 1.0447 | 42,989,944 | 23 | 295 | .009445749 |
| A | 44,634,240 | 1.0523 | 42,415,889 | 17 | 200 | .004199177 |
| D3 | 42,497,889 | 1.1240 | 37,809,510 | 20 | 1,615 | .569131192 |
| F1 | 3,455,983 | 0.9514 | 3,632,524 | 10 | 45 | .026586104 |
| F1 | 3,228,953 | 0.8558 | 3,773,023 | 9 | 18 | .031346115 |
| F1 | 3,718,553 | 0.8878 | 4,188,503 | 9 | 10 | .047528347 |
| Random Totals: | 232,059,093 | 224,823,953 | 124 | 3,279 | ||
| Catg D1 Exception Values: | 4,924,480 | 5,632,657 | ||||
| Catg F1 Exception Values: | 6,086,020 | 6,922,309 | ||||
| Total Test Values (4): | 243,069,593 | 237,378,919 |
Margin of Error
| Margin of Error Percent: | 5.8889425 |
|---|---|
| Margin of Error Value: | 13,979,108 |
Confidence Interval Values (5)
| State Lower Limit: | 223,399,811 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 243,069,593 | (Within Confidence Interval) |
| State Upper Limit: | 251,358,027 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 273,772,621 | (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