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2008 Confidence Interval Detail
208/Scurry
208-903/Ira ISD

Category Summary

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

Stratum
Variance
D3 8,844,091 1.0630 8,319,935 18 824 .016597954
G1 55,030,834 0.9541 57,678,266 9 89 .015957669
G1 55,451,652 0.9990 55,507,159 8 28 .000013230
G1 53,391,764 1.0028 53,242,684 5 12 .000134365
G1 54,435,110 0.9998 54,445,999 3 5 .000026589
Random Totals: 227,153,451   229,194,043 43 958  
Catg D1 Exception Values: 8,098,935   7,462,407      
Total Test Values (4): 235,252,386   236,656,450      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 11,832,823

Confidence Interval Values (5)

State Lower Limit: 224,823,627 (State Test Value minus Margin of Error Percent)
Local Test Value: 235,252,386 (Within Confidence Interval)
State Upper Limit: 248,489,273 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 263,490,931 (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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