2009 Confidence Interval Detail
236/Walker
093-905/Richards ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 1,155,670 | 0.9635 | 1,199,450 | 6 | 26 | .004777678 |
| A | 1,189,220 | 0.9424 | 1,261,906 | 5 | 18 | .004037722 |
| A | 1,245,470 | 0.9264 | 1,344,419 | 5 | 13 | .012691669 |
| A | 1,049,600 | 0.9893 | 1,060,952 | 6 | 7 | .001906735 |
| D3 | 19,663,270 | 0.9963 | 19,736,294 | 20 | 597 | .024428057 |
| Random Totals: | 24,303,230 | 24,603,021 | 42 | 661 | ||
| Catg D1 Exception Values: | 2,190,200 | 2,366,309 | ||||
| Total Test Values (4): | 26,493,430 | 26,969,330 |
Margin of Error
| Margin of Error Percent: | 5.1175391 |
|---|---|
| Margin of Error Value: | 1,380,166 |
Confidence Interval Values (5)
| State Lower Limit: | 25,589,164 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 26,493,430 | (Within Confidence Interval) |
| State Upper Limit: | 28,349,496 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 23,154,805 | (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