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2009 Confidence Interval Detail
101/Harris
101-916/La Porte ISD

Category Summary

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

Stratum
Variance
A 403,077,110 0.9514 423,667,343 33 4,113 .025244705
A 380,909,788 1.0028 379,846,219 32 3,122 .015795036
A 351,921,335 1.0170 346,038,677 31 2,328 .021922652
A 364,750,551 0.9738 374,564,131 32 1,523 .026626023
F1 162,853,781 0.9779 166,534,187 10 299 .005528455
F1 195,875,509 0.9670 202,559,989 8 76 .002465328
F1 156,535,973 1.0167 153,964,761 5 17 .001434168
F1 205,665,100 1.0012 205,418,598 3 8 .000751080
L1 96,947,739 0.8413 115,235,634 7 393 .039091977
L1 111,113,817 0.9864 112,645,800 6 80 .003784660
L1 85,106,881 1.0373 82,046,545 6 24 .138234267
L1 173,325,493 0.9321 185,951,607 4 16 .020130153
Random Totals: 2,688,083,077   2,748,473,491 177 11,999  
Catg D1 Exception Values: 2,123,485   1,541,180      
Total Test Values (4): 2,690,206,562   2,750,014,671      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 137,500,734

Confidence Interval Values (5)

State Lower Limit: 2,612,513,937 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,690,206,562 (Within Confidence Interval)
State Upper Limit: 2,887,515,405 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 6,149,247,591 (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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