2008 Confidence Interval Detail
170/Montgomery
170-902/Conroe ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 2,679,142,928 | 0.9529 | 2,811,567,770 | 12 | 22,770 | .005990832 |
| A | 3,092,778,162 | 0.9732 | 3,177,947,145 | 13 | 16,690 | .007184787 |
| A | 3,345,146,063 | 0.9660 | 3,462,884,123 | 14 | 11,256 | .004585172 |
| A | 3,995,628,631 | 0.9647 | 4,141,835,421 | 12 | 6,377 | .005594961 |
| B | 89,719,584 | 0.9730 | 92,209,233 | 6 | 26 | .007038268 |
| B | 181,586,425 | 0.9630 | 188,563,266 | 6 | 25 | .001577965 |
| B | 125,618,710 | 0.9581 | 131,112,316 | 4 | 10 | .001714017 |
| B | 193,386,910 | 0.9513 | 203,286,986 | 3 | 11 | .000061385 |
| C | 196,574,156 | 0.8555 | 229,776,921 | 7 | 8,617 | .071763574 |
| C | 158,353,534 | 1.0007 | 158,242,764 | 7 | 2,121 | .042707694 |
| C | 160,976,970 | 1.0116 | 159,131,050 | 7 | 441 | .002273416 |
| C | 150,926,230 | 1.0189 | 148,126,637 | 6 | 70 | .056566505 |
| D3 | 236,511,192 | 0.8788 | 269,129,713 | 10 | 4,269 | .157245246 |
| F1 | 612,874,122 | 0.8959 | 684,087,646 | 13 | 1,145 | .011436613 |
| F1 | 654,941,083 | 0.8684 | 754,192,864 | 12 | 274 | .024636333 |
| F1 | 643,725,550 | 0.9691 | 664,250,903 | 6 | 87 | .003618318 |
| F1 | 676,351,760 | 0.9921 | 681,737,486 | 5 | 26 | .004562927 |
| L1 | 342,012,780 | 0.9454 | 361,765,158 | 8 | 2,620 | .012160855 |
| L1 | 345,090,519 | 0.9008 | 383,093,383 | 7 | 390 | .009810298 |
| L1 | 332,137,372 | 0.8877 | 374,154,976 | 7 | 93 | .006441591 |
| L1 | 301,722,048 | 0.9879 | 305,417,601 | 4 | 13 | .019230962 |
| Random Totals: | 18,515,204,729 | 19,382,513,362 | 169 | 77,331 | ||
| Catg D1 Exception Values: | 49,177,075 | 48,640,968 | ||||
| Total Test Values (4): | 18,564,381,804 | 19,431,154,330 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 971,557,717 |
Confidence Interval Values (5)
| State Lower Limit: | 18,459,596,613 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 18,564,381,804 | (Within Confidence Interval) |
| State Upper Limit: | 20,402,712,047 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 18,349,340,969 | (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