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2011 Confidence Interval Detail
050/Coryell
050-910/Copperas Cove ISD

Category Summary

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

Stratum
Variance
A 229,179,075 0.9514 240,886,141 19 3,444 .023738918
A 216,885,376 0.9715 223,247,942 36 2,356 .019223211
A 223,088,960 0.9102 245,098,835 31 1,766 .010342301
A 274,729,092 0.9155 300,086,392 25 1,543 .023523508
B 27,308,120 0.9484 28,793,884 10 328 .110533510
B 25,621,669 1.0479 24,450,491 10 193 .036769394
B 23,434,120 0.9119 25,698,125 9 126 .031200165
B 36,096,130 0.9498 38,003,927 7 32 .011023112
F1 35,778,741 1.1692 30,601,044 9 135 .023126017
F1 37,730,932 1.1146 33,851,545 9 58 .070182834
F1 37,170,474 0.9556 38,897,524 8 21 .051475405
F1 31,402,960 1.0772 29,152,395 4 6 .004637008
Random Totals: 1,198,425,649   1,258,768,245 177 10,008  
Catg D1 Exception Values: 1,576,060   1,691,954      
Total Test Values (4): 1,200,001,709   1,260,460,199      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 63,023,010

Confidence Interval Values (5)

State Lower Limit: 1,197,437,189 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,200,001,709 (Within Confidence Interval)
State Upper Limit: 1,323,483,209 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,159,879,664 (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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