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2006 Confidence Interval Detail
138/Knox
138-902/Knox City-O'Brien CISD

Category Summary

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

Stratum
Variance
A 3,093,750 1.0100 3,063,119 8 229 .004384480
A 3,102,025 0.9411 3,296,169 9 139 .042483009
A 3,107,145 0.8234 3,773,555 8 92 .083332499
A 3,062,604 1.0294 2,975,135 7 57 .009356869
D3 3,601,220 0.8541 4,216,392 16 649 .223782751
G1 3,593,640 0.9596 3,744,935 7 20 .009544138
G1 4,022,320 1.0497 3,831,876 4 6 .019639228
G1 3,226,910 0.9561 3,375,076 2 3 .027607159
L1 1,144,978 0.9901 1,156,427 9 100 .002255381
L1 1,169,831 1.0474 1,116,890 7 41 .005340511
L1 1,171,754 1.0180 1,151,035 6 19 .000555706
L1 1,087,729 1.0265 1,059,648 3 6 .000343853
Random Totals: 31,383,906   32,760,257 86 1,361  
Catg J Exception Values: 1,910,560   1,955,460      
Catg D1 Exception Values: 11,169,180   11,192,147      
Catg G1 Exception Values: 7,943,210   7,910,619      
Total Test Values (4): 52,406,856   53,818,483      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 2,690,924

Confidence Interval Values (5)

State Lower Limit: 51,127,559 (State Test Value minus Margin of Error Percent)
Local Test Value: 52,406,856 (Within Confidence Interval)
State Upper Limit: 56,509,407 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 58,644,626 (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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