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2011 Confidence Interval Detail
072/Erath
072-903/Stephenville ISD

Category Summary

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

Stratum
Variance
A 129,611,100 0.9299 139,381,761 35 1,992 .025318570
A 129,214,450 0.9790 131,986,159 39 1,218 .013503100
A 135,353,970 0.9559 141,598,462 46 928 .007776322
A 134,886,170 1.0263 131,429,572 14 532 .077923890
B 19,631,490 0.9857 19,916,293 14 159 .002196874
B 16,064,850 0.9952 16,142,333 10 29 .006513528
B 15,707,610 1.0166 15,451,121 5 7 .025857381
D3 218,968,070 0.9895 221,291,632 30 4,442 .041961691
F1 53,727,790 1.0089 53,253,831 12 358 .041991241
F1 51,024,480 0.9691 52,651,409 10 127 .003619086
F1 56,288,690 0.9797 57,455,027 10 60 .014416082
F1 49,499,380 1.0005 49,474,643 12 14 .009558378
L1 21,048,470 0.9954 21,145,740 10 357 .016274049
L1 20,520,620 0.9933 20,659,036 10 90 .005026817
L1 20,711,370 0.9911 20,897,356 10 31 .007387365
L1 18,720,640 0.9770 19,161,351 5 9 .013200222
Random Totals: 1,090,979,150   1,111,895,726 272 10,353  
Catg D1 Exception Values: 14,098,660   12,909,011      
Catg B Exception Values: 21,290,210   21,233,512      
Total Test Values (4): 1,126,368,020   1,146,038,249      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 57,301,912

Confidence Interval Values (5)

State Lower Limit: 1,088,736,337 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,126,368,020 (Within Confidence Interval)
State Upper Limit: 1,203,340,161 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,254,159,999 (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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