2006 Confidence Interval Detail
199/Rockwall
199-901/Rockwall ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 857,884,205 | 1.0070 | 851,920,760 | 58 | 5,661 | .005747069 |
| A | 857,691,460 | 1.0362 | 827,727,717 | 60 | 4,116 | .005857307 |
| A | 857,916,156 | 1.0249 | 837,073,037 | 60 | 3,008 | .008931812 |
| A | 857,531,657 | 1.0102 | 848,873,151 | 57 | 1,654 | .006424558 |
| F1 | 133,127,842 | 1.0666 | 124,815,153 | 8 | 253 | .036179106 |
| F1 | 133,164,120 | 1.1737 | 113,456,693 | 6 | 80 | .017530310 |
| F1 | 130,954,362 | 1.0595 | 123,600,153 | 6 | 31 | .003615134 |
| F1 | 132,285,300 | 0.9211 | 143,616,654 | 7 | 10 | .005921355 |
| Random Totals: | 3,960,555,102 | 3,871,083,318 | 262 | 14,813 | ||
| Catg D1 Exception Values: | 2,922,020 | 2,696,271 | ||||
| Total Test Values (4): | 3,963,477,122 | 3,873,779,589 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 193,688,979 |
Confidence Interval Values (5)
| State Lower Limit: | 3,680,090,610 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 3,963,477,122 | (Within Confidence Interval) |
| State Upper Limit: | 4,067,468,568 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 4,727,504,650 | (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