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2009 Confidence Interval Detail
094/Guadalupe
094-902/Schertz-Cibolo-Universal City ISD

Category Summary

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

Stratum
Variance
A 642,930,728 0.9927 647,658,636 49 4,965 .005006394
A 620,064,186 1.0140 611,503,142 47 3,674 .005656193
A 611,409,404 1.0051 608,307,038 48 3,055 .007766624
A 596,384,488 0.9936 600,225,934 48 2,298 .003932452
F1 79,463,933 1.0511 75,600,735 7 166 .003035723
F1 85,693,773 1.0250 83,603,681 6 62 .003083104
F1 81,190,567 0.9663 84,022,112 6 23 .030799608
F1 73,925,155 1.0423 70,925,026 4 8 .007605584
Random Totals: 2,791,062,234   2,781,846,304 215 14,251  
Catg D1 Exception Values: 1,641,483   1,684,574      
Total Test Values (4): 2,792,703,717   2,783,530,878      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 139,176,544

Confidence Interval Values (5)

State Lower Limit: 2,644,354,334 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,792,703,717 (Within Confidence Interval)
State Upper Limit: 2,922,707,422 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 3,059,870,353 (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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