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2006 Confidence Interval Detail
028/Caldwell
028-906/Prairie Lea ISD

Category Summary

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

Stratum
Variance
A 3,833,690 0.8247 4,648,587 8 92 .040430239
A 3,794,946 0.9929 3,822,083 8 53 .021600006
A 3,908,103 1.0151 3,849,968 6 38 .019312459
A 3,717,956 1.0253 3,626,213 5 24 .016045012
D3 19,940,101 0.9334 21,362,868 20 850 .057097609
G1 7,590,040 1.0144 7,482,295 5 23 .005708797
G1 8,172,820 1.0952 7,462,400 4 8 .023814608
G1 7,529,410 0.9994 7,533,930 3 5 .001113877
G1 6,417,810 0.7150 8,975,958 2 3 .309365868
Random Totals: 64,904,876   68,764,302 61 1,096  
Catg J Exception Values: 1,539,526   1,282,628      
Catg D1 Exception Values: 1,398,841   1,558,322      
Total Test Values (4): 67,843,243   71,605,252      

Margin of Error

Margin of Error Percent: 6.7765839
Margin of Error Value: 4,852,390

Confidence Interval Values (5)

State Lower Limit: 66,752,862 (State Test Value minus Margin of Error Percent)
Local Test Value: 67,843,243 (Within Confidence Interval)
State Upper Limit: 76,457,642 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 78,287,687 (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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