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2006 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 8,596,540,457 1.0051 8,552,920,562 95 94,580 .003647095
A 8,596,049,609 0.9928 8,658,390,017 97 45,458 .001803456
A 8,597,748,159 0.9878 8,703,936,180 98 22,267 .002347409
A 8,593,973,383 0.9861 8,715,113,460 100 7,478 .000784121
B 1,529,933,630 0.9607 1,592,519,652 19 6,155 .140796775
B 1,531,803,522 1.0103 1,516,186,798 18 434 .001568665
B 1,541,893,696 1.0022 1,538,508,976 7 141 .000181892
B 1,514,971,205 0.9809 1,544,470,593 7 50 .001553835
C 442,167,099 0.8792 502,919,812 15 12,128 .090030344
C 438,754,754 0.7838 559,778,967 8 1,510 .031695427
C 440,881,816 0.9294 474,372,516 7 452 .019469384
C 439,576,663 0.9184 478,633,126 8 117 .057179871
F1 5,005,217,123 0.9475 5,282,551,053 79 6,142 .060242450
F1 5,006,952,285 0.9987 5,013,469,796 24 1,142 .003235177
F1 5,039,628,374 0.9010 5,593,372,224 18 301 .036378918
F1 4,964,938,237 0.9319 5,327,758,597 11 59 .015222621
L1 2,155,083,052 1.0185 2,115,938,195 7 9,667 .042244625
L1 2,154,628,405 1.0681 2,017,253,445 7 1,325 .005312914
L1 2,159,933,094 1.0137 2,130,741,930 7 365 .000743693
L1 2,149,082,640 1.0085 2,130,969,400 6 77 .004806002
Random Totals: 70,899,757,203   72,449,805,299 638 209,848  
Catg D1 Exception Values: 3,203,058   3,546,551      
Total Test Values (4): 70,902,960,261   72,453,351,850      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 3,622,667,593

Confidence Interval Values (5)

State Lower Limit: 68,830,684,257 (State Test Value minus Margin of Error Percent)
Local Test Value: 70,902,960,261 (Within Confidence Interval)
State Upper Limit: 76,076,019,443 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 69,878,590,338 (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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