Top navigation skipped
170/Montgomery
2017 Confidence Interval Detail
170/Montgomery
170-904/Willis ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 633,321,120 | 0.9614 | 658,748,825 | 150 | 5,295 | .020539280 |
| A | 665,058,068 | 0.9701 | 685,556,198 | 150 | 3,327 | .022096288 |
| A | 690,892,700 | 0.9766 | 707,446,959 | 123 | 2,154 | .010913598 |
| A | 678,621,900 | 1.0047 | 675,447,298 | 35 | 1,054 | .008848468 |
| F1 | 70,875,620 | 1.0727 | 66,072,173 | 10 | 266 | .005241487 |
| F1 | 72,239,793 | 0.9382 | 76,998,287 | 10 | 91 | .060477787 |
| F1 | 74,175,422 | 1.0463 | 70,893,073 | 8 | 37 | .008344487 |
| F1 | 80,637,929 | 1.0371 | 77,753,282 | 6 | 16 | .004681858 |
| Random Totals: | 2,965,822,552 | 3,018,916,095 | 492 | 12,240 | ||
| Catg D1 Exception Values: | 24,186,582 | 17,330,360 | ||||
| Total Test Values (4): | 2,990,009,134 | 3,036,246,455 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 151,812,322 |
Confidence Interval Values (5)
| State Lower Limit: | 2,884,434,133 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 2,990,009,134 | (Within Confidence Interval) |
| State Upper Limit: | 3,188,058,777 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 3,290,774,213 | (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, D2, E, 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