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2008 Confidence Interval Detail
158/Matagorda
158-901/Bay City ISD

Category Summary

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

Stratum
Variance
A 82,348,121 0.9280 88,737,199 16 1,717 .050924637
A 69,845,580 0.9972 70,041,697 18 850 .006563062
A 134,681,890 0.9695 138,918,917 43 1,210 .014644370
A 148,140,331 0.9671 153,179,951 31 807 .010430647
F1 27,214,623 1.0166 26,770,237 10 325 .043843617
F1 34,262,235 1.0150 33,755,897 10 153 .035690378
F1 29,871,238 0.9728 30,706,454 8 48 .003593682
F1 34,693,564 0.9775 35,492,137 6 16 .005789701
G1 23,784,750 0.9832 24,191,162 5 24 .000231704
G1 23,103,000 1.0135 22,795,264 4 8 .001066951
G1 20,130,600 1.0100 19,931,287 3 4 .000590614
L1 12,177,510 1.1718 10,392,140 7 284 .060063145
L1 14,575,705 1.0390 14,028,590 7 86 .009858392
L1 14,343,620 0.9230 15,540,217 7 31 .015219593
Random Totals: 669,172,767   684,481,149 175 5,563  
Catg J Exception Values: 35,308,873   35,343,580      
Catg D1 Exception Values: 12,878,877   13,905,201      
Catg G1 Exception Values: 20,648,770   20,349,612      
Catg L1 Exception Values: 12,863,760   13,395,611      
Total Test Values (4): 750,873,047   767,475,153      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 38,373,758

Confidence Interval Values (5)

State Lower Limit: 729,101,395 (State Test Value minus Margin of Error Percent)
Local Test Value: 750,873,047 (Within Confidence Interval)
State Upper Limit: 805,848,911 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,085,833,353 (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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