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2008 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 194,335,523 0.9655 201,279,672 55 3,033 .012062877
A 225,606,690 0.9909 227,678,565 58 2,568 .003741600
A 209,678,840 0.9698 216,208,332 57 1,792 .004787226
A 255,578,610 0.9736 262,508,843 58 1,516 .006374325
B 26,646,640 0.9961 26,750,969 8 309 .002985673
B 32,244,330 1.0441 30,882,415 14 217 .000528867
B 31,408,480 1.0558 29,748,513 18 144 .004996851
B 26,562,830 0.9900 26,831,141 6 25 .000292301
F1 33,022,338 0.9894 33,376,125 7 140 .002644319
F1 35,489,007 1.0256 34,603,166 7 61 .007497806
F1 35,279,737 0.9476 37,230,622 5 21 .013183563
F1 37,837,210 0.9985 37,894,051 3 8 .001042236
Random Totals: 1,143,690,235   1,164,992,414 296 9,834  
Catg D1 Exception Values: 1,582,600   1,261,928      
Total Test Values (4): 1,145,272,835   1,166,254,342      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 58,312,717

Confidence Interval Values (5)

State Lower Limit: 1,107,941,625 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,145,272,835 (Within Confidence Interval)
State Upper Limit: 1,224,567,059 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,122,658,240 (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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