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253/Zapata
2017 Confidence Interval Detail
253/Zapata
253-901/Zapata County ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 77,178,702 | 0.9389 | 82,201,195 | 16 | 2,085 | .021993643 |
| A | 76,594,111 | 1.0107 | 75,783,230 | 15 | 1,066 | .023611825 |
| A | 78,879,195 | 0.9634 | 81,875,851 | 17 | 640 | .013512255 |
| A | 77,624,879 | 0.9065 | 85,631,416 | 15 | 365 | .009911742 |
| E | 68,641,732 | 0.9422 | 72,852,613 | 16 | 1,881 | .019739335 |
| F1 | 12,932,258 | 1.0358 | 12,485,285 | 9 | 172 | .029118954 |
| F1 | 13,083,683 | 1.0478 | 12,486,813 | 10 | 79 | .018096094 |
| F1 | 12,416,928 | 1.0173 | 12,205,768 | 8 | 43 | .017918278 |
| F1 | 13,321,608 | 0.7975 | 16,704,211 | 7 | 20 | .282669688 |
| G1 | 92,750,466 | 1.0201 | 90,922,915 | 15 | 1,188 | .034534892 |
| G1 | 92,963,796 | 1.0689 | 86,971,462 | 15 | 330 | .020164925 |
| G1 | 92,676,525 | 1.0812 | 85,716,357 | 15 | 171 | .012469907 |
| G1 | 92,355,401 | 0.9808 | 94,163,337 | 15 | 62 | .026551311 |
| Random Totals: | 801,419,284 | 810,000,453 | 173 | 8,102 | ||
| Catg J Exception Values: | 70,458,846 | 68,074,831 | ||||
| Catg D1 Exception Values: | 33,565,475 | 52,085,686 | ||||
| Total Test Values (4): | 905,443,605 | 930,160,970 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 46,508,048 |
Confidence Interval Values (5)
| State Lower Limit: | 883,652,922 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 905,443,605 | (Within Confidence Interval) |
| State Upper Limit: | 976,669,018 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 1,080,317,658 | (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