2009 Confidence Interval Detail
091/Grayson
091-914/Sadler-Southmayd ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 34,628,167 | 1.0038 | 34,497,078 | 9 | 613 | .001236587 |
| A | 32,001,345 | 1.0912 | 29,326,746 | 7 | 260 | .016753875 |
| A | 39,252,781 | 0.9542 | 41,136,849 | 7 | 207 | .016148114 |
| A | 35,285,998 | 0.9963 | 35,417,041 | 7 | 89 | .000437587 |
| D3 | 63,036,475 | 0.8158 | 77,269,521 | 18 | 2,679 | .043998957 |
| G1 | 20,124,793 | 1.0207 | 19,716,658 | 8 | 43 | .028725560 |
| G1 | 21,127,206 | 1.0313 | 20,485,994 | 4 | 11 | .000114731 |
| G1 | 23,126,844 | 0.9953 | 23,236,053 | 3 | 4 | .002418631 |
| Random Totals: | 268,583,609 | 281,085,940 | 63 | 3,906 | ||
| Catg D1 Exception Values: | 7,805,481 | 5,815,398 | ||||
| Catg G1 Exception Values: | 15,184,834 | 14,367,443 | ||||
| Total Test Values (4): | 291,573,924 | 301,268,781 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 15,063,439 |
Confidence Interval Values (5)
| State Lower Limit: | 286,205,342 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 291,573,924 | (Within Confidence Interval) |
| State Upper Limit: | 316,332,220 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 326,578,103 | (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