2011 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 | 3,615,928,295 | 1.0466 | 3,454,928,621 | 41 | 28,118 | .013326833 |
| A | 3,552,085,075 | 1.0057 | 3,531,952,943 | 48 | 16,394 | .012606458 |
| A | 3,727,219,259 | 0.9843 | 3,786,669,978 | 45 | 10,583 | .009699196 |
| A | 3,816,376,832 | 0.9972 | 3,827,092,692 | 24 | 5,012 | .007132581 |
| B | 132,197,827 | 1.0431 | 126,735,526 | 8 | 33 | .007561016 |
| B | 198,751,546 | 1.0703 | 185,697,044 | 9 | 23 | .004034627 |
| B | 136,434,900 | 1.0685 | 127,688,255 | 5 | 9 | .010250511 |
| B | 269,002,458 | 1.0543 | 255,147,926 | 4 | 13 | .003095900 |
| C | 107,601,966 | 1.0079 | 106,758,573 | 34 | 5,243 | .016176468 |
| C | 132,851,706 | 1.0367 | 128,148,651 | 46 | 1,931 | .021464848 |
| C | 123,968,310 | 0.9696 | 127,855,105 | 22 | 419 | .012141976 |
| C | 125,758,580 | 0.9901 | 127,016,039 | 10 | 69 | .006840396 |
| D3 | 269,585,378 | 0.9500 | 283,774,082 | 21 | 4,258 | .009444898 |
| F1 | 768,930,325 | 0.8286 | 927,987,358 | 15 | 1,280 | .177464386 |
| F1 | 772,644,962 | 0.9610 | 804,001,001 | 10 | 283 | .002600624 |
| F1 | 800,273,710 | 1.0345 | 773,585,027 | 11 | 94 | .003685927 |
| F1 | 667,931,790 | 1.0119 | 660,076,875 | 7 | 22 | .002125821 |
| L1 | 336,481,022 | 0.9808 | 343,067,926 | 10 | 2,592 | .001309930 |
| L1 | 338,378,824 | 1.0048 | 336,762,365 | 10 | 401 | .001207241 |
| L1 | 356,987,021 | 1.0138 | 352,127,659 | 9 | 108 | .001588145 |
| L1 | 388,642,870 | 0.9989 | 389,070,848 | 7 | 22 | .000304435 |
| Random Totals: | 20,638,032,656 | 20,656,144,494 | 396 | 76,907 | ||
| Catg J Exception Values: | 146,066,355 | 150,036,172 | ||||
| Catg D1 Exception Values: | 46,033,225 | 45,512,604 | ||||
| Total Test Values (4): | 20,830,132,236 | 20,851,693,270 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 1,042,584,664 |
Confidence Interval Values (5)
| State Lower Limit: | 19,809,108,606 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 20,830,132,236 | (Within Confidence Interval) |
| State Upper Limit: | 21,894,277,934 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 21,140,758,651 | (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