2007 Confidence Interval Detail
177/Nolan
177-903/Blackwell ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| D3 | 38,747,717 | 1.0128 | 38,258,014 | 25 | 1,719 | .012537321 |
| G1 | 18,260,342 | 0.9577 | 19,066,871 | 10 | 60 | .040951886 |
| G1 | 18,238,050 | 1.0046 | 18,154,539 | 7 | 17 | .007630575 |
| G1 | 17,840,272 | 0.9734 | 18,327,791 | 4 | 7 | .003831449 |
| G1 | 16,999,660 | 0.8902 | 19,096,450 | 3 | 4 | .003851812 |
| Random Totals: | 110,086,041 | 112,903,665 | 49 | 1,807 | ||
| Catg J Exception Values: | 6,077,859 | 6,286,563 | ||||
| Catg D1 Exception Values: | 12,080,538 | 13,219,988 | ||||
| Total Test Values (4): | 128,244,438 | 132,410,216 |
Margin of Error
| Margin of Error Percent: | 5.0000002 |
|---|---|
| Margin of Error Value: | 6,620,511 |
Confidence Interval Values (5)
| State Lower Limit: | 125,789,705 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 128,244,438 | (Within Confidence Interval) |
| State Upper Limit: | 139,030,727 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 843,549,532 | (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