2009 Confidence Interval Detail
156/Martin
156-905/Grady ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| D3 | 12,177,980 | 1.0545 | 11,548,582 | 11 | 1,400 | .008491904 |
| G1 | 140,844,659 | 1.0249 | 137,422,831 | 15 | 189 | .018542409 |
| G1 | 140,735,311 | 1.0608 | 132,669,034 | 15 | 68 | .009528599 |
| G1 | 144,433,819 | 0.9961 | 144,999,316 | 15 | 36 | .001246163 |
| G1 | 134,722,325 | 1.0280 | 131,052,845 | 9 | 13 | .003826748 |
| Random Totals: | 572,914,094 | 557,692,608 | 65 | 1,706 | ||
| Catg D1 Exception Values: | 27,648,120 | 32,587,055 | ||||
| Total Test Values (4): | 600,562,214 | 590,279,663 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 29,513,983 |
Confidence Interval Values (5)
| State Lower Limit: | 560,765,680 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 600,562,214 | (Within Confidence Interval) |
| State Upper Limit: | 619,793,646 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 678,539,046 | (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