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2007 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 2,724,972 0.9392 2,901,376 8 101 .014146052
A 2,715,143 0.9624 2,821,221 6 54 .003804930
A 2,708,020 0.9858 2,747,028 6 39 .009311073
A 2,686,987 1.0076 2,666,720 7 27 .016152735
D3 8,396,670 0.9023 9,305,852 10 804 .030561453
G1 6,102,120 1.0786 5,657,445 5 24 .023174104
G1 6,087,150 1.0604 5,740,428 4 11 .002677328
G1 6,480,790 1.1112 5,832,244 4 9 .022484256
G1 5,703,380 0.9406 6,063,555 3 5 .000204246
Random Totals: 43,605,232   43,735,869 53 1,074  
Catg J Exception Values: 2,114,623   2,106,028      
Catg D1 Exception Values: 13,765,730   16,593,271      
Total Test Values (4): 59,485,585   62,435,168      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 3,121,758

Confidence Interval Values (5)

State Lower Limit: 59,313,410 (State Test Value minus Margin of Error Percent)
Local Test Value: 59,485,585 (Within Confidence Interval)
State Upper Limit: 65,556,926 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 65,197,100 (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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