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2007 Confidence Interval Detail
101/Harris
101-903/Alief ISD

Category Summary

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

Stratum
Variance
A 1,211,361,539 0.9673 1,252,312,146 57 13,482 .047573395
A 1,211,318,374 0.9840 1,231,014,608 80 10,619 .007372107
A 1,211,353,733 0.9930 1,219,892,984 75 8,693 .006171543
A 1,211,019,509 1.0079 1,201,527,442 79 3,888 .010806323
B 382,634,240 0.9471 404,006,166 8 93 .005179031
B 380,911,579 0.9753 390,558,371 7 52 .001283173
B 389,851,777 0.9140 426,533,673 9 35 .002327869
B 371,367,983 0.9136 406,488,598 8 18 .004809220
F1 778,866,289 0.9466 822,804,024 18 715 .036712624
F1 779,217,682 0.9111 855,249,349 17 199 .015430377
F1 805,975,533 0.9330 863,853,733 17 70 .017216730
F1 739,246,749 0.9517 776,764,473 14 22 .018261048
L1 203,125,310 1.0375 195,783,431 7 2,458 .006073720
L1 205,058,806 0.9864 207,886,056 7 297 .001725645
L1 209,765,385 0.9986 210,059,468 6 69 .001169791
L1 199,633,875 1.0124 197,188,735 6 20 .001010330
Random Totals: 10,290,708,363   10,661,923,257 415 40,730  
Catg D1 Exception Values: 16,362   15,205      
Total Test Values (4): 10,290,724,725   10,661,938,462      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 533,096,923

Confidence Interval Values (5)

State Lower Limit: 10,128,841,539 (State Test Value minus Margin of Error Percent)
Local Test Value: 10,290,724,725 (Within Confidence Interval)
State Upper Limit: 11,195,035,385 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 11,011,148,289 (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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