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2007 Confidence Interval Detail
057/Dallas
057-911/Highland Park ISD

Category Summary

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

Stratum
Variance
A 2,607,318,189 0.9774 2,667,606,087 49 3,509 .000743228
A 2,606,826,080 0.9697 2,688,280,994 50 2,260 .001802909
A 2,605,861,728 0.9783 2,663,663,220 47 1,438 .001947293
A 2,605,443,691 0.9698 2,686,578,357 42 640 .001390041
B 133,525,543 0.9829 135,848,553 7 378 .010362131
B 133,778,523 0.9025 148,231,050 7 263 .014573055
B 133,142,119 0.8625 154,367,674 7 209 .015745795
B 133,142,142 1.0366 128,441,194 7 123 .058505652
F1 259,602,084 0.9735 266,668,807 7 128 .024794500
F1 261,527,618 0.8483 308,296,143 5 21 .039316499
F1 278,647,638 0.8972 310,574,719 3 6 .018015457
F1 232,135,711 0.9924 233,913,453 2 3 .002332332
Random Totals: 11,990,951,066   12,392,470,251 233 8,978  
Total Test Values (4): 11,990,951,066   12,392,470,251      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 619,623,513

Confidence Interval Values (5)

State Lower Limit: 11,772,846,738 (State Test Value minus Margin of Error Percent)
Local Test Value: 11,990,951,066 (Within Confidence Interval)
State Upper Limit: 13,012,093,764 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 11,353,503,104 (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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