2007 Confidence Interval Detail
091/Grayson
091-913/Pottsboro ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 98,583,478 | 0.9668 | 101,968,844 | 36 | 1,552 | .007021968 |
| A | 98,592,791 | 0.9929 | 99,297,805 | 21 | 785 | .001125070 |
| A | 98,655,275 | 0.9949 | 99,160,996 | 23 | 500 | .001852218 |
| A | 98,384,411 | 0.9945 | 98,928,518 | 20 | 253 | .001866507 |
| D3 | 60,959,119 | 0.9278 | 65,702,866 | 24 | 1,686 | .032876710 |
| F1 | 11,857,039 | 0.7559 | 15,685,989 | 9 | 102 | .105487302 |
| F1 | 12,272,297 | 0.9201 | 13,338,003 | 7 | 29 | .011469819 |
| F1 | 11,652,502 | 0.9348 | 12,465,235 | 4 | 8 | .000132803 |
| G1 | 14,392,166 | 0.9151 | 15,727,424 | 6 | 33 | .042680693 |
| G1 | 13,243,601 | 0.9372 | 14,131,030 | 4 | 11 | .024100115 |
| G1 | 15,690,847 | 1.0636 | 14,752,583 | 3 | 6 | .005111141 |
| L1 | 2,313,006 | 1.0179 | 2,272,331 | 8 | 80 | .002709098 |
| L1 | 2,335,732 | 1.0170 | 2,296,688 | 5 | 19 | .000648717 |
| L1 | 12,673,899 | 1.0234 | 12,384,111 | 6 | 11 | .000301041 |
| Random Totals: | 551,606,163 | 568,112,423 | 176 | 5,075 | ||
| Catg D1 Exception Values: | 3,511,066 | 2,314,099 | ||||
| Catg F1 Exception Values: | 10,760,642 | 12,118,534 | ||||
| Total Test Values (4): | 565,877,871 | 582,545,056 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 29,127,253 |
Confidence Interval Values (5)
| State Lower Limit: | 553,417,803 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 565,877,871 | (Within Confidence Interval) |
| State Upper Limit: | 611,672,309 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 583,213,479 | (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