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2008 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 1,200,116,173 1.0171 1,179,939,212 28 13,827 .007670240
A 1,247,293,881 1.0413 1,197,823,760 31 11,288 .008061562
A 1,256,316,533 1.0096 1,244,370,575 31 9,170 .011416946
A 1,299,660,692 0.9629 1,349,735,894 28 3,930 .002237210
B 353,358,893 0.9803 360,459,954 8 91 .004339182
B 376,571,696 0.9385 401,248,477 5 53 .001207330
B 474,697,387 0.9543 497,429,935 6 43 .013109703
B 452,101,153 0.8680 520,853,863 5 21 .004280524
F1 820,045,133 0.9467 866,214,358 7 798 .005440532
F1 924,472,752 0.8475 1,090,823,306 5 240 .013137560
F1 1,027,552,201 0.9579 1,072,713,437 5 27 .006624671
L1 196,317,206 1.0406 188,657,703 8 2,326 .007751755
L1 204,281,208 1.0092 202,418,954 8 305 .019485149
L1 203,270,629 0.9305 218,453,121 7 77 .006122082
L1 212,962,134 1.0008 212,791,900 5 22 .000604066
Random Totals: 10,249,017,671   10,603,934,449 187 42,218  
Catg D1 Exception Values: 8,866   7,975      
Catg F1 Exception Values: 38,262,431   47,386,225      
Total Test Values (4): 10,287,288,968   10,651,328,649      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 532,566,432

Confidence Interval Values (5)

State Lower Limit: 10,118,762,217 (State Test Value minus Margin of Error Percent)
Local Test Value: 10,287,288,968 (Within Confidence Interval)
State Upper Limit: 11,183,895,081 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 11,905,461,913 (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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