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2007 Confidence Interval Detail
044/Collingsworth
044-904/Samnorwood ISD

Category Summary

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

Stratum
Variance
D3 3,388,520 0.9451 3,585,356 10 995 .270970780
G1 3,428,070 0.9104 3,765,455 6 77 .005828011
G1 3,399,990 1.0131 3,356,026 6 40 .009252721
G1 3,428,070 1.0363 3,307,990 6 28 .012727586
G1 3,337,540 1.0391 3,211,953 5 17 .001731612
Random Totals: 16,982,190   17,226,780 33 1,157  
Catg J Exception Values: 1,407,781   1,391,186      
Catg D1 Exception Values: 12,265,350   14,788,331      
Total Test Values (4): 30,655,321   33,406,297      

Margin of Error

Margin of Error Percent: 5.0000004
Margin of Error Value: 1,670,315

Confidence Interval Values (5)

Local Test Value: 30,655,321 (Outside Confidence Interval)
State Lower Limit: 31,735,982 (State Test Value minus Margin of Error Percent)
State Upper Limit: 35,076,612 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 36,436,407 (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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