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2007 Confidence Interval Detail
140/Lamb
140-907/Springlake-Earth ISD

Category Summary

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

Stratum
Variance
A 3,185,414 0.9468 3,364,400 15 207 .033496286
A 3,194,350 0.9173 3,482,339 15 100 .024830253
A 3,178,233 0.9166 3,467,415 15 60 .011773706
A 3,181,318 0.8899 3,574,916 15 38 .025929187
D3 7,483,060 0.9068 8,252,161 20 1,074 .030790947
Random Totals: 20,222,375   22,141,231 80 1,479  
Catg J Exception Values: 2,213,850   2,270,519      
Catg D1 Exception Values: 24,425,856   22,141,801      
Total Test Values (4): 46,862,081   46,553,551      

Margin of Error

Margin of Error Percent: 5.0000010
Margin of Error Value: 2,327,678

Confidence Interval Values (5)

State Lower Limit: 44,225,873 (State Test Value minus Margin of Error Percent)
Local Test Value: 46,862,081 (Within Confidence Interval)
State Upper Limit: 48,881,229 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 54,287,733 (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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