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2008 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 2,530,706,460 0.9850 2,569,245,137 50 3,282 .007402523
A 2,859,728,350 0.9648 2,964,063,381 50 2,440 .009796054
A 2,942,941,710 0.9743 3,020,570,368 50 1,672 .005402573
A 3,298,286,050 0.9665 3,412,608,432 32 829 .003207943
B 122,710,070 0.9978 122,980,627 7 347 .003011929
B 118,963,490 0.9730 122,264,635 12 230 .006511355
B 162,850,560 0.9695 167,973,760 23 240 .006097523
B 174,977,640 1.0161 172,205,137 16 160 .005371470
F1 286,664,900 0.9021 317,775,080 7 146 .012709581
F1 243,191,330 0.8836 275,227,852 5 24 .024224468
F1 623,342,370 0.9551 652,646,184 6 13 .009465908
Random Totals: 13,364,362,930   13,797,560,593 258 9,383  
Total Test Values (4): 13,364,362,930   13,797,560,593      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 689,878,030

Confidence Interval Values (5)

State Lower Limit: 13,107,682,563 (State Test Value minus Margin of Error Percent)
Local Test Value: 13,364,362,930 (Within Confidence Interval)
State Upper Limit: 14,487,438,623 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 12,121,196,527 (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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