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2009 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 227,971,806 0.9127 249,777,370 53 3,410 .004759629
A 203,161,480 0.9465 214,644,987 43 2,225 .008124678
A 232,512,260 0.9823 236,701,883 57 1,888 .004050241
A 216,081,085 0.9986 216,384,023 54 1,224 .003638325
B 30,131,326 1.0638 28,324,240 9 338 .011705818
B 30,147,150 1.0294 29,286,138 8 204 .001818389
B 25,391,010 1.0180 24,942,053 7 120 .005705173
B 28,095,140 0.9524 29,499,307 6 31 .000266398
F1 36,559,831 0.9858 37,086,459 7 142 .004066936
F1 36,605,069 1.0167 36,003,805 6 58 .004795656
F1 38,693,657 0.9623 40,209,557 5 22 .000996202
F1 35,582,170 0.9930 35,833,001 4 7 .000757066
Random Totals: 1,140,931,984   1,178,692,823 259 9,669  
Catg D1 Exception Values: 1,576,220   1,446,765      
Total Test Values (4): 1,142,508,204   1,180,139,588      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 59,006,979

Confidence Interval Values (5)

State Lower Limit: 1,121,132,609 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,142,508,204 (Within Confidence Interval)
State Upper Limit: 1,239,146,567 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,125,841,027 (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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