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2009 Confidence Interval Detail
169/Montague
169-909/Prairie Valley ISD

Category Summary

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

Stratum
Variance
A 5,408,790 1.0348 5,226,894 8 128 .015899711
A 5,149,830 0.9715 5,300,906 7 62 .006380426
A 5,330,670 0.9848 5,412,947 6 35 .011485892
A 5,663,170 1.0017 5,653,559 6 20 .010531046
D3 15,551,620 1.0190 15,261,649 18 767 .044761779
G1 21,539,620 1.0422 20,667,453 8 42 .003521813
G1 24,461,330 1.0163 24,069,005 5 10 .009207104
Random Totals: 83,105,030   81,592,413 58 1,064  
Catg D1 Exception Values: 4,858,190   4,479,456      
Catg G1 Exception Values: 37,746,690   35,358,439      
Total Test Values (4): 125,709,910   121,430,308      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 6,071,515

Confidence Interval Values (5)

State Lower Limit: 115,358,793 (State Test Value minus Margin of Error Percent)
Local Test Value: 125,709,910 (Within Confidence Interval)
State Upper Limit: 127,501,823 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 133,600,568 (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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