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2011 Confidence Interval Detail
187/Polk
187-907/Livingston ISD

Category Summary

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

Stratum
Variance
A 176,415,436 0.8727 202,149,004 31 3,870 .049435147
A 182,011,353 0.8854 205,569,633 29 1,833 .080899620
A 179,438,128 0.8662 207,155,539 12 1,054 .120048848
A 180,997,681 0.8610 210,217,980 14 534 .028600497
C 19,442,967 0.9845 19,749,078 39 8,692 .603275919
C 18,752,756 1.1180 16,773,485 10 2,348 .028997667
C 18,603,927 1.0633 17,496,405 10 575 .237929036
C 17,290,165 0.7550 22,900,881 10 97 .686061134
D3 113,113,538 0.9866 114,649,846 16 4,272 .067902365
F1 52,711,359 1.1994 43,948,107 10 309 .108233392
F1 51,243,483 1.0133 50,570,890 9 79 .023610655
F1 54,844,386 0.8342 65,744,889 9 28 .428804627
F1 49,009,278 1.0675 45,910,331 5 10 .049687516
Random Totals: 1,113,874,457   1,222,836,068 204 23,701  
Catg D1 Exception Values: 28,424,450   25,577,677      
Total Test Values (4): 1,142,298,907   1,248,413,745      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 62,420,687

Confidence Interval Values (5)

Local Test Value: 1,142,298,907 (Outside Confidence Interval)
State Lower Limit: 1,185,993,058 (State Test Value minus Margin of Error Percent)
State Upper Limit: 1,310,834,432 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,306,410,740 (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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