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2010 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 109,544,495 1.0551 103,823,803 24 1,936 .024398935
A 116,142,080 1.0032 115,771,611 19 1,146 .010251128
A 114,762,521 0.9980 114,992,506 20 855 .003433099
A 118,754,710 0.9516 124,794,777 14 553 .003952210
F1 32,466,102 1.0295 31,535,796 11 318 .016834853
F1 33,352,968 1.0115 32,973,770 10 127 .007398962
F1 32,091,460 0.9928 32,324,194 8 45 .035283991
F1 49,138,597 0.9964 49,316,135 6 17 .036470291
G1 13,417,500 0.9726 13,795,497 7 22 .023597021
G1 12,624,210 0.8763 14,406,265 4 8 .066482516
G1 12,954,300 1.0025 12,921,995 3 5 .174459624
G1 10,520,410 1.0229 10,284,886 2 3 .000226995
L1 14,155,410 1.1173 12,669,301 10 281 .129860043
L1 14,079,440 1.1611 12,125,950 9 75 .016740000
L1 13,726,600 0.9622 14,265,849 7 23 .007941093
L1 14,627,580 0.9659 15,143,990 2 5 .001831138
Random Totals: 712,358,383   711,146,325 156 5,419  
Catg J Exception Values: 33,303,990   35,691,246      
Catg D1 Exception Values: 12,750,143   14,710,958      
Total Test Values (4): 758,412,516   761,548,529      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 38,077,426

Confidence Interval Values (5)

State Lower Limit: 723,471,103 (State Test Value minus Margin of Error Percent)
Local Test Value: 758,412,516 (Within Confidence Interval)
State Upper Limit: 799,625,955 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,005,148,101 (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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