2006 Confidence Interval Detail
057/Dallas
057-910/Grand Prairie ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 679,578,249 | 1.0148 | 669,667,175 | 48 | 8,159 | .004599016 |
| A | 679,364,837 | 0.9892 | 686,782,084 | 48 | 6,206 | .009590359 |
| A | 679,213,598 | 0.9892 | 686,629,193 | 47 | 4,870 | .002254702 |
| A | 679,377,991 | 1.0103 | 672,451,738 | 47 | 3,393 | .002057935 |
| B | 64,488,529 | 1.0005 | 64,456,301 | 19 | 922 | .006071148 |
| B | 65,242,210 | 0.9867 | 66,121,628 | 13 | 144 | .001333183 |
| B | 64,811,566 | 0.9571 | 67,716,609 | 7 | 10 | .006895390 |
| B | 62,949,774 | 1.0234 | 61,510,430 | 4 | 5 | .000218649 |
| F1 | 155,251,883 | 1.0451 | 148,552,180 | 9 | 490 | .006477218 |
| F1 | 155,804,203 | 0.9947 | 156,634,365 | 7 | 121 | .005079812 |
| F1 | 157,588,692 | 0.9056 | 174,015,782 | 6 | 37 | .024375749 |
| F1 | 150,211,897 | 0.9646 | 155,724,546 | 5 | 14 | .011729458 |
| L1 | 102,815,824 | 1.3496 | 76,182,442 | 7 | 493 | .039853165 |
| L1 | 103,040,339 | 1.0365 | 99,411,808 | 7 | 65 | .004889361 |
| L1 | 108,957,967 | 0.9949 | 109,516,501 | 7 | 21 | .068824204 |
| Random Totals: | 3,908,697,559 | 3,895,372,782 | 281 | 24,950 | ||
| Catg D1 Exception Values: | 171,990 | 169,974 | ||||
| Catg L1 Exception Values: | 80,539,360 | 79,620,608 | ||||
| Total Test Values (4): | 3,989,408,909 | 3,975,163,364 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 198,758,168 |
Confidence Interval Values (5)
| State Lower Limit: | 3,776,405,196 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 3,989,408,909 | (Within Confidence Interval) |
| State Upper Limit: | 4,173,921,532 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 4,306,059,565 | (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