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2008 Confidence Interval Detail
079/Fort Bend
079-906/Needville ISD

Category Summary

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

Stratum
Variance
A 80,110,090 0.9431 84,943,368 15 1,238 .010452862
A 85,797,810 0.9512 90,199,548 14 754 .005096356
A 97,807,200 0.9719 100,635,045 17 617 .001467147
A 122,899,695 0.9724 126,388,004 8 522 .004664801
D3 101,534,480 0.9240 109,885,801 25 4,175 .027799241
Random Totals: 488,149,275   512,051,766 79 7,306  
Catg J Exception Values: 28,551,352   24,785,405      
Catg D1 Exception Values: 22,914,730   26,219,285      
Total Test Values (4): 539,615,357   563,056,456      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 28,152,823

Confidence Interval Values (5)

State Lower Limit: 534,903,633 (State Test Value minus Margin of Error Percent)
Local Test Value: 539,615,357 (Within Confidence Interval)
State Upper Limit: 591,209,279 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 568,369,666 (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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