2009 Confidence Interval Detail
043/Collin
043-914/Wylie ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 613,138,492 | 0.9918 | 618,207,796 | 48 | 4,704 | .002663832 |
| A | 597,941,213 | 1.0126 | 590,500,902 | 50 | 3,740 | .006643759 |
| A | 633,350,533 | 0.9830 | 644,303,696 | 50 | 3,228 | .006496838 |
| A | 615,785,668 | 0.9999 | 615,847,253 | 51 | 2,260 | .001369623 |
| F1 | 47,215,201 | 0.9034 | 52,263,893 | 9 | 96 | .024772783 |
| F1 | 45,727,546 | 0.9424 | 48,522,438 | 6 | 30 | .087317158 |
| F1 | 50,059,460 | 0.8842 | 56,615,539 | 5 | 13 | .013776707 |
| F1 | 39,658,035 | 0.8996 | 44,084,076 | 3 | 4 | .006392958 |
| L1 | 29,956,523 | 0.9920 | 30,198,108 | 7 | 223 | .006135789 |
| L1 | 28,637,139 | 0.9791 | 29,248,431 | 5 | 23 | .005689732 |
| L1 | 18,422,721 | 0.9763 | 18,869,939 | 3 | 3 | .000241480 |
| Random Totals: | 2,719,892,531 | 2,748,662,071 | 237 | 14,324 | ||
| Catg D1 Exception Values: | 773,221 | 723,291 | ||||
| Catg L1 Exception Values: | 67,797,463 | 64,929,969 | ||||
| Total Test Values (4): | 2,788,463,215 | 2,814,315,331 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 140,715,767 |
Confidence Interval Values (5)
| State Lower Limit: | 2,673,599,564 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 2,788,463,215 | (Within Confidence Interval) |
| State Upper Limit: | 2,955,031,098 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 3,129,753,162 | (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