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2009 Confidence Interval Detail
046/Comal
046-902/Comal ISD

Category Summary

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

Stratum
Variance
A 1,362,563,912 0.9703 1,404,270,753 50 9,581 .023016174
A 1,337,520,814 0.9862 1,356,236,883 51 5,373 .012672528
A 1,345,368,596 1.0024 1,342,147,442 49 3,796 .024821283
A 1,430,490,058 0.9808 1,458,493,126 49 2,662 .018066356
C 248,772,718 0.9225 269,672,323 48 9,650 .038239499
C 225,782,128 0.9375 240,834,270 39 3,497 .046307948
C 243,452,847 0.9886 246,260,213 24 2,460 .019262056
C 248,895,232 0.9547 260,705,176 15 950 .029914410
D3 370,069,477 0.9539 387,954,164 17 6,943 .067342908
F1 183,588,358 0.9852 186,346,283 10 639 .002467055
F1 174,920,071 1.0153 172,284,124 7 224 .044854017
F1 180,267,777 1.0143 177,726,291 7 115 .007975320
F1 220,955,628 0.8781 251,629,231 7 47 .018105121
L1 74,143,620 1.0135 73,156,014 7 815 .017289721
L1 91,402,030 0.9581 95,399,259 7 166 .013028536
L1 113,754,870 1.0377 109,622,116 6 60 .002901234
Random Totals: 7,851,948,136   8,032,737,668 393 46,978  
Catg D1 Exception Values: 16,709,436   13,231,903      
Catg L1 Exception Values: 83,038,160   76,318,914      
Total Test Values (4): 7,951,695,732   8,122,288,485      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 406,114,424

Confidence Interval Values (5)

State Lower Limit: 7,716,174,061 (State Test Value minus Margin of Error Percent)
Local Test Value: 7,951,695,732 (Within Confidence Interval)
State Upper Limit: 8,528,402,909 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 8,511,934,942 (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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