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2007 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 94,756,134 0.9263 102,295,297 32 1,939 .018686582
A 94,797,745 0.9820 96,535,382 40 1,158 .019022530
A 94,661,042 0.9392 100,789,014 30 875 .010852284
A 94,728,226 0.9995 94,775,614 18 489 .008531625
F1 26,050,262 0.9479 27,482,078 7 323 .024034898
F1 26,044,131 0.9611 27,098,253 10 126 .010797563
F1 26,553,390 0.9223 28,790,404 7 50 .012977213
F1 25,137,815 0.9516 26,416,367 6 15 .020991997
G1 22,593,380 0.9567 23,615,951 6 26 .060878589
G1 20,882,440 0.9747 21,424,479 4 7 .021510713
G1 26,866,080 1.0986 24,454,833 3 5 .001114728
L1 12,571,644 1.0477 11,999,278 7 300 .029588656
L1 12,781,065 1.0335 12,366,778 6 73 .020433233
L1 13,072,437 0.9787 13,356,940 6 31 .003386499
L1 11,807,488 0.8752 13,491,188 3 5 .004392614
Random Totals: 603,303,279   624,891,856 185 5,422  
Catg J Exception Values: 33,791,682   33,233,468      
Catg D1 Exception Values: 12,901,366   13,931,865      
Catg G1 Exception Values: 14,757,870   22,403,973      
Total Test Values (4): 664,754,197   694,461,162      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 34,723,058

Confidence Interval Values (5)

State Lower Limit: 659,738,104 (State Test Value minus Margin of Error Percent)
Local Test Value: 664,754,197 (Within Confidence Interval)
State Upper Limit: 729,184,220 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 979,714,660 (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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