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2006 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 85,422,980 0.9651 88,512,051 9 399 .057605537
A 85,663,739 0.9431 90,832,085 13 307 .021455462
A 85,496,764 0.9948 85,943,671 17 250 .003537381
A 85,012,616 0.9716 87,497,546 11 176 .010190543
C 8,331,669 0.9691 8,597,326 7 195 .007782036
C 4,072,557 0.9799 4,156,094 7 61 .022356723
C 6,360,800 0.9849 6,458,321 7 51 .043537677
C 6,023,070 1.0383 5,800,896 7 10 .004502840
F1 8,160,022 0.9635 8,469,146 5 25 .015424789
F1 8,140,444 0.9246 8,804,287 4 10 .017992319
F1 7,421,587 0.6727 11,032,536 3 4 .063864612
L1 7,669,955 1.0860 7,062,574 7 23 .011139387
L1 15,461,134 0.9847 15,701,365 3 8 .001200596
Random Totals: 413,237,337   428,867,898 100 1,519  
Catg D1 Exception Values: 599,268   667,355      
Catg F1 Exception Values: 27,050,140   28,281,911      
Catg L1 Exception Values: 72,775,790   72,058,936      
Total Test Values (4): 513,662,535   529,876,100      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 26,493,805

Confidence Interval Values (5)

State Lower Limit: 503,382,295 (State Test Value minus Margin of Error Percent)
Local Test Value: 513,662,535 (Within Confidence Interval)
State Upper Limit: 556,369,905 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 522,769,214 (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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