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2010 Confidence Interval Detail
057/Dallas
057-919/Sunnyvale ISD

Category Summary

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

Stratum
Variance
A 106,551,610 1.0092 105,580,272 11 514 .007683308
A 108,355,580 0.9300 116,511,376 14 399 .035705901
A 126,495,990 0.9333 135,536,258 17 369 .024403229
A 103,683,350 0.9573 108,308,106 11 203 .008700435
C 16,149,460 0.9838 16,415,389 11 237 .016213265
C 10,990,680 0.9745 11,278,276 9 81 .005841458
C 5,433,820 1.0520 5,165,228 6 18 .007907946
C 14,634,940 1.0463 13,987,327 5 14 .002910420
F1 22,585,700 0.9685 23,320,289 11 44 .059341114
F1 21,871,450 0.9898 22,096,838 4 11 .004038218
L1 11,924,130 0.9990 11,936,066 7 24 .003792823
L1 12,835,170 0.9832 13,054,485 2 5 .001487326
Random Totals: 561,511,880   583,189,910 108 1,919  
Catg J Exception Values: 10,545,538   12,504,945      
Catg D1 Exception Values: 604,987   639,610      
Catg F1 Exception Values: 77,755,230   70,703,000      
Catg L1 Exception Values: 74,338,640   74,282,391      
Total Test Values (4): 724,756,275   741,319,856      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 37,065,993

Confidence Interval Values (5)

State Lower Limit: 704,253,863 (State Test Value minus Margin of Error Percent)
Local Test Value: 724,756,275 (Within Confidence Interval)
State Upper Limit: 778,385,849 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 783,244,509 (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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