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2006 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 91,735,800 0.9520 96,361,134 26 1,959 .008873614
A 91,864,861 0.9968 92,159,772 25 1,150 .003978224
A 91,711,839 1.0064 91,128,616 46 837 .007664020
A 91,624,778 0.9947 92,112,977 24 472 .003273369
F1 23,549,435 0.9094 25,895,574 8 326 .011047353
F1 23,475,126 0.9908 23,693,103 9 129 .003398898
F1 23,834,569 0.9190 25,935,331 6 50 .024604541
F1 23,181,662 0.9093 25,493,965 6 14 .015445947
G1 26,739,240 1.0058 26,585,047 5 19 .002956342
G1 28,760,170 0.9802 29,341,124 4 7 .002777536
G1 26,556,970 1.0543 25,189,197 3 4 .000634524
L1 10,910,911 1.0509 10,382,445 8 298 .026347249
L1 10,988,410 1.0771 10,201,848 6 73 .021661107
L1 11,344,146 0.9697 11,698,614 7 31 .001606148
L1 10,092,414 0.8491 11,886,013 3 4 .011887026
Random Totals: 586,370,331   598,064,760 186 5,373  
Catg J Exception Values: 39,363,653   39,280,868      
Catg D1 Exception Values: 13,014,787   13,819,422      
Catg G1 Exception Values: 24,226,140   22,649,538      
Total Test Values (4): 662,974,911   673,814,588      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 33,690,729

Confidence Interval Values (5)

State Lower Limit: 640,123,859 (State Test Value minus Margin of Error Percent)
Local Test Value: 662,974,911 (Within Confidence Interval)
State Upper Limit: 707,505,317 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 960,719,262 (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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