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2007 Confidence Interval Detail
057/Dallas
057-904/Cedar Hill ISD

Category Summary

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

Stratum
Variance
A 490,992,810 0.8980 546,762,595 21 4,413 .050257858
A 489,582,155 0.9702 504,619,826 17 3,559 .011125291
A 490,317,866 0.9793 500,681,983 21 2,682 .009037945
A 490,051,393 0.9879 496,053,642 22 1,196 .003217398
C 38,342,227 0.9984 38,403,673 12 1,006 .028575957
C 36,256,235 1.0037 36,122,581 12 516 .026078596
C 37,245,543 1.0232 36,401,039 12 301 .018443444
C 37,077,087 1.0253 36,162,184 6 69 .034775516
F1 105,979,366 0.8922 118,784,315 7 159 .019064232
F1 111,449,231 0.8428 132,236,866 6 38 .016747909
F1 101,246,644 0.8942 113,225,949 4 11 .013532801
F1 105,123,800 0.8689 120,984,923 3 4 .005892681
L1 41,567,681 0.9682 42,932,949 7 235 .076386783
L1 40,792,001 1.0638 38,345,555 7 30 .002406515
L1 41,532,615 1.1019 37,691,819 6 11 .007780988
L1 40,551,575 1.0302 39,362,818 3 4 .000805080
Random Totals: 2,698,108,229   2,838,772,717 166 14,234  
Catg D1 Exception Values: 369,533   330,583      
Total Test Values (4): 2,698,477,762   2,839,103,300      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 141,955,165

Confidence Interval Values (5)

State Lower Limit: 2,697,148,135 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,698,477,762 (Within Confidence Interval)
State Upper Limit: 2,981,058,465 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,871,211,790 (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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