2008 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 | 11,573,280 | 0.8358 | 13,846,949 | 19 | 1,391 | .073910950 |
| G1 | 127,695,500 | 0.9175 | 139,177,657 | 8 | 179 | .063602059 |
| G1 | 129,632,290 | 0.9396 | 137,965,400 | 7 | 60 | .002931523 |
| G1 | 132,415,309 | 1.2822 | 103,271,961 | 6 | 28 | .162881424 |
| G1 | 120,923,074 | 1.0277 | 117,663,787 | 4 | 8 | .003632017 |
| Random Totals: | 522,239,453 | 511,925,754 | 44 | 1,666 | ||
| Catg D1 Exception Values: | 13,782,190 | 23,047,731 | ||||
| Total Test Values (4): | 536,021,643 | 534,973,485 |
Margin of Error
| Margin of Error Percent: | 7.4435169 |
|---|---|
| Margin of Error Value: | 39,820,842 |
Confidence Interval Values (5)
| State Lower Limit: | 495,152,643 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 536,021,643 | (Within Confidence Interval) |
| State Upper Limit: | 574,794,327 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 591,606,307 | (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