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2007 Confidence Interval Detail
101/Harris
101-910/Galena Park ISD

Category Summary

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

Stratum
Variance
A 400,400,870 0.9832 407,242,545 46 6,040 .005597951
A 400,363,603 0.9874 405,472,557 76 4,280 .003566305
A 400,721,081 0.9845 407,030,047 96 3,491 .002978743
A 399,808,053 1.0034 398,453,312 76 2,293 .003311052
B 49,068,651 0.9194 53,370,297 11 95 .011419599
B 100,394,959 0.9397 106,837,245 6 15 .012763510
F1 87,190,772 0.9014 96,728,170 13 441 .035624889
F1 88,555,011 0.9034 98,024,143 14 100 .012997966
F1 92,021,205 0.8368 109,967,979 9 32 .027982358
F1 80,167,546 1.0038 79,864,063 6 10 .000528273
L1 80,159,079 0.9329 85,924,621 9 607 .016884695
L1 85,441,204 1.0762 79,391,567 8 48 .032268137
L1 85,880,822 0.9503 90,372,327 4 11 .000433622
Random Totals: 2,350,172,856   2,418,678,873 374 17,463  
Catg D1 Exception Values: 83,823   82,484      
Catg B Exception Values: 44,248,917   48,251,500      
Catg L1 Exception Values: 85,693,875   93,050,343      
Total Test Values (4): 2,480,199,471   2,560,063,200      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 128,003,160

Confidence Interval Values (5)

State Lower Limit: 2,432,060,040 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,480,199,471 (Within Confidence Interval)
State Upper Limit: 2,688,066,360 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 5,031,903,668 (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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