2009 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 | 106,029,617 | 1.0025 | 105,765,204 | 40 | 1,616 | .021895660 |
| A | 104,792,002 | 1.0053 | 104,239,532 | 20 | 805 | .000173824 |
| A | 112,958,574 | 0.9624 | 117,371,752 | 23 | 552 | .008513011 |
| A | 109,225,537 | 1.0010 | 109,116,421 | 15 | 279 | .000296240 |
| D3 | 71,739,618 | 0.8542 | 83,984,568 | 12 | 1,684 | .185348684 |
| F1 | 13,891,196 | 0.8123 | 17,101,066 | 8 | 116 | .080817479 |
| F1 | 14,354,688 | 0.8050 | 17,831,911 | 8 | 33 | .103430689 |
| F1 | 25,199,344 | 0.8616 | 29,247,149 | 4 | 12 | .037935125 |
| G1 | 11,247,135 | 1.0077 | 11,161,194 | 6 | 28 | .003934383 |
| G1 | 11,421,022 | 0.9492 | 12,032,261 | 4 | 12 | .008738311 |
| G1 | 11,682,434 | 1.0394 | 11,239,594 | 5 | 7 | .004936404 |
| G1 | 10,618,430 | 0.9998 | 10,620,554 | 3 | 4 | .000652702 |
| Random Totals: | 603,159,597 | 629,711,206 | 148 | 5,148 | ||
| Catg D1 Exception Values: | 3,239,981 | 2,303,833 | ||||
| Catg F1 Exception Values: | 6,000,000 | 6,538,744 | ||||
| Total Test Values (4): | 612,399,578 | 638,553,783 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 31,927,689 |
Confidence Interval Values (5)
| State Lower Limit: | 606,626,094 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 612,399,578 | (Within Confidence Interval) |
| State Upper Limit: | 670,481,472 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 650,261,676 | (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