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2008 Confidence Interval Detail
033/Carson
033-901/Groom ISD

Category Summary

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

Stratum
Variance
A 2,374,330 0.9036 2,627,634 7 93 .044059429
A 2,615,260 0.9223 2,835,585 6 55 .006975784
A 3,031,520 0.9477 3,198,818 7 44 .013438931
A 3,873,250 0.9075 4,268,044 6 38 .017193427
D3 6,574,780 0.7689 8,550,891 18 490 .021492892
G1 6,138,760 0.9542 6,433,410 5 17 .013339749
G1 6,034,980 1.0275 5,873,460 4 9 .012421010
G1 6,175,350 1.0378 5,950,424 4 7 .008577100
G1 5,404,770 1.0688 5,056,858 3 4 .000297865
Random Totals: 42,223,000   44,795,124 60 757  
Catg J Exception Values: 1,199,115   1,147,718      
Catg D1 Exception Values: 7,750,260   11,267,124      
Total Test Values (4): 51,172,375   57,209,966      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 2,860,498

Confidence Interval Values (5)

Local Test Value: 51,172,375 (Outside Confidence Interval)
State Lower Limit: 54,349,468 (State Test Value minus Margin of Error Percent)
State Upper Limit: 60,070,464 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 55,054,875 (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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