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2009 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 2,993,730 1.0601 2,824,007 9 103 .018194380
A 2,735,400 0.9657 2,832,557 7 50 .016226589
A 3,287,900 0.9429 3,487,008 9 43 .010315076
A 3,822,530 0.9650 3,961,171 7 32 .004777667
D3 7,024,840 0.9284 7,566,609 13 491 .001565255
G1 5,404,590 1.0217 5,289,801 5 18 .013882875
G1 5,729,490 1.0474 5,470,202 4 10 .005164588
G1 4,816,040 0.9753 4,938,009 3 6 .001024957
G1 4,945,220 1.0523 4,699,439 3 4 .001371560
Random Totals: 40,759,740   41,068,803 60 757  
Catg J Exception Values: 1,405,390   1,291,630      
Catg D1 Exception Values: 11,804,440   13,966,726      
Total Test Values (4): 53,969,570   56,327,159      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 2,816,358

Confidence Interval Values (5)

State Lower Limit: 53,510,801 (State Test Value minus Margin of Error Percent)
Local Test Value: 53,969,570 (Within Confidence Interval)
State Upper Limit: 59,143,517 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 57,305,769 (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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