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2007 Confidence Interval Detail
057/Dallas
057-905/Dallas ISD

Category Summary

(1)
Category
(1)
Local
Value
(1)
Stratum
Ratio
(1)
State
Value
(2)
Sample
Size
(3)
Total
Parcels

Stratum
Variance
A 9,317,718,991 0.9974 9,342,008,212 90 99,964 .005430232
A 9,318,092,134 0.9877 9,434,131,957 97 46,926 .008481390
A 9,317,347,941 0.9903 9,408,611,472 92 22,545 .001407355
A 9,316,875,473 0.9896 9,414,789,282 98 7,674 .003218257
B 1,684,791,052 0.7121 2,365,947,271 20 5,904 .236208870
B 1,685,232,901 0.9754 1,727,735,187 7 423 .006693032
B 1,698,343,786 0.9394 1,807,902,689 7 137 .005584902
B 1,668,169,053 0.9869 1,690,312,142 6 46 .003827338
C 489,983,618 0.8654 566,193,226 12 12,035 .047620376
C 491,168,829 0.8630 569,141,169 11 1,542 .059489497
C 488,301,830 0.8271 590,378,225 9 452 .012349987
C 487,078,002 1.0311 472,386,773 7 113 .047025656
F1 5,899,908,708 0.6492 9,087,967,819 22 6,227 .189308475
F1 5,895,969,474 0.7655 7,702,115,577 11 1,134 .093256175
F1 5,917,754,643 0.8975 6,593,598,488 13 289 .031349641
F1 5,876,103,552 0.9309 6,312,282,256 10 54 .017362946
L1 2,247,114,218 1.1003 2,042,274,123 7 9,481 .026173661
L1 2,249,336,971 1.0591 2,123,819,253 7 1,315 .009897084
L1 2,248,715,555 1.0127 2,220,515,014 7 352 .010997653
L1 2,241,869,101 1.0031 2,234,940,785 6 74 .000080574
Random Totals: 78,539,875,832   85,707,050,920 539 216,687  
Catg D1 Exception Values: 3,614,770   4,048,619      
Total Test Values (4): 78,543,490,602   85,711,099,539      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 4,285,554,977

Confidence Interval Values (5)

Local Test Value: 78,543,490,602 (Outside Confidence Interval)
State Lower Limit: 81,425,544,562 (State Test Value minus Margin of Error Percent)
State Upper Limit: 89,996,654,516 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 78,344,587,379 (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

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