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2011 Confidence Interval Detail
084/Galveston
084-908/Hitchcock ISD

Category Summary

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

Stratum
Variance
A 88,855,477 1.0278 86,452,108 12 1,443 .119614611
A 92,427,079 1.0182 90,774,974 14 695 .010195305
A 84,952,440 0.9927 85,577,153 14 284 .007208143
A 88,690,080 1.0302 86,090,157 9 149 .010190838
C 12,601,255 0.9055 13,916,350 13 1,028 .051157053
C 11,826,360 1.0412 11,358,394 11 156 .038707185
C 10,448,200 1.1339 9,214,393 11 95 .047966693
C 10,174,810 1.2107 8,404,072 10 46 .038957252
F1 11,989,290 0.9990 12,001,291 9 86 .004288822
F1 11,585,860 1.0751 10,776,542 8 24 .037556109
F1 9,939,160 0.8808 11,284,242 4 6 .016918323
F1 9,285,680 0.9831 9,445,306 2 3 .000053171
Random Totals: 442,775,691   435,294,982 117 4,015  
Catg D1 Exception Values: 1,710,011   2,603,129      
Total Test Values (4): 444,485,702   437,898,111      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 21,894,906

Confidence Interval Values (5)

State Lower Limit: 416,003,205 (State Test Value minus Margin of Error Percent)
Local Test Value: 444,485,702 (Within Confidence Interval)
State Upper Limit: 459,793,017 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 476,688,234 (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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