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2007 Confidence Interval Detail
184/Parker
184-902/Springtown ISD

Category Summary

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

Stratum
Variance
A 110,931,853 1.0026 110,644,178 12 1,560 .077196699
A 111,121,787 0.9516 116,773,631 31 987 .010416802
A 110,757,953 0.9913 111,730,004 53 705 .005188182
A 110,865,358 0.9909 111,883,498 43 471 .001134845
D3 142,232,830 1.0060 141,384,523 20 3,796 .002890138
G1 13,000,780 0.8644 15,040,236 7 73 .025904585
G1 12,581,680 1.0116 12,437,406 6 20 .021514486
G1 15,427,470 1.0613 14,536,389 4 9 .002137993
Random Totals: 626,919,711   634,429,865 176 7,621  
Catg J Exception Values: 17,659,943   18,653,487      
Catg D1 Exception Values: 4,276,360   3,370,643      
Catg G1 Exception Values: 9,312,610   8,481,454      
Total Test Values (4): 658,168,624   664,935,449      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 33,246,772

Confidence Interval Values (5)

State Lower Limit: 631,688,677 (State Test Value minus Margin of Error Percent)
Local Test Value: 658,168,624 (Within Confidence Interval)
State Upper Limit: 698,182,221 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 744,459,095 (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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