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2008 Confidence Interval Detail
246/Williamson
246-905/Granger ISD

Category Summary

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

Stratum
Variance
A 12,158,664 0.9868 12,321,305 10 257 .041395986
A 8,152,031 0.8858 9,203,015 8 108 .016859789
A 11,140,301 0.9023 12,346,560 9 109 .025244797
A 12,992,982 0.9988 13,008,592 8 67 .016449877
D3 39,177,373 1.0042 39,013,516 22 1,558 .046650431
F1 1,168,248 0.9269 1,260,382 6 21 .018989084
F1 1,932,132 1.0161 1,901,518 5 17 .005001358
F1 2,463,826 0.9167 2,687,712 5 11 .027004924
F1 1,383,030 1.0996 1,257,757 2 3 .036188084
Random Totals: 90,568,587   93,000,357 75 2,151  
Catg J Exception Values: 5,689,764   5,829,400      
Catg D1 Exception Values: 12,852,181   11,307,514      
Total Test Values (4): 109,110,532   110,137,271      

Margin of Error

Margin of Error Percent: 5.0000004
Margin of Error Value: 5,506,864

Confidence Interval Values (5)

State Lower Limit: 104,630,407 (State Test Value minus Margin of Error Percent)
Local Test Value: 109,110,532 (Within Confidence Interval)
State Upper Limit: 115,644,135 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 99,831,989 (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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