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2011 Confidence Interval Detail
157/Mason
157-901/Mason ISD

Category Summary

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

Stratum
Variance
A 22,843,150 0.9838 23,219,303 12 363 .015451240
A 24,801,890 0.8630 28,739,154 11 254 .044012030
A 24,319,870 0.9203 26,426,024 11 171 .005186855
A 25,650,240 0.9271 27,667,177 10 101 .008001549
D3 125,753,680 0.9920 126,767,823 27 8,276 .096113863
F1 6,414,670 0.9675 6,630,150 9 96 .010151431
F1 5,880,080 0.9053 6,495,173 8 37 .024337264
F1 5,675,260 0.9727 5,834,543 7 22 .008273897
F1 5,772,500 0.9294 6,210,996 5 11 .014748756
Random Totals: 247,111,340   257,990,343 100 9,331  
Catg J Exception Values: 4,229,930   5,117,466      
Catg D1 Exception Values: 30,237,850   28,689,194      
Total Test Values (4): 281,579,120   291,797,003      

Margin of Error

Margin of Error Percent: 5.3544316
Margin of Error Value: 15,624,071

Confidence Interval Values (5)

State Lower Limit: 276,172,932 (State Test Value minus Margin of Error Percent)
Local Test Value: 281,579,120 (Within Confidence Interval)
State Upper Limit: 307,421,074 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 276,919,877 (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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