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2008 Confidence Interval Detail
020/Brazoria
020-908/Pearland ISD

Category Summary

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

Stratum
Variance
A 1,069,954,750 1.0057 1,063,890,574 50 7,993 .005735225
A 1,092,462,383 1.0060 1,085,946,703 48 6,517 .004055096
A 1,086,978,763 0.9961 1,091,234,578 47 5,327 .000997069
A 1,096,960,005 1.0088 1,087,390,965 49 3,681 .004209592
F1 129,748,210 0.9282 139,784,755 12 391 .027196054
F1 128,149,633 0.8953 143,135,969 11 128 .054383663
F1 128,878,520 0.7038 183,118,102 6 57 .231234480
F1 128,177,650 0.9230 138,870,693 6 17 .011914851
Random Totals: 4,861,309,914   4,933,372,339 229 24,111  
Catg D1 Exception Values: 251,480   267,928      
Total Test Values (4): 4,861,561,394   4,933,640,267      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 246,682,013

Confidence Interval Values (5)

State Lower Limit: 4,686,958,254 (State Test Value minus Margin of Error Percent)
Local Test Value: 4,861,561,394 (Within Confidence Interval)
State Upper Limit: 5,180,322,280 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 5,363,597,398 (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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