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2007 Confidence Interval Detail
216/Sterling
216-901/Sterling City ISD

Category Summary

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

Stratum
Variance
D3 10,861,477 0.9219 11,781,622 13 1,975 .001460027
G1 94,898,110 1.0617 89,383,169 15 451 .164182726
G1 95,485,380 1.1976 79,730,611 14 122 .027586889
G1 96,292,705 1.0622 90,654,025 11 38 .016231671
G1 91,454,393 1.0687 85,575,365 6 10 .010295069
Random Totals: 388,992,065   357,124,792 59 2,596  
Catg J Exception Values: 10,764,500   11,418,526      
Catg D1 Exception Values: 9,318,670   10,671,651      
Total Test Values (4): 409,075,235   379,214,969      

Margin of Error

Margin of Error Percent: 5.5271761
Margin of Error Value: 20,959,879

Confidence Interval Values (5)

State Lower Limit: 358,255,090 (State Test Value minus Margin of Error Percent)
State Upper Limit: 400,174,848 (State Test Value plus Margin of Error Percent)
Local Test Value: 409,075,235 (Outside Confidence Interval)
Value Assigned (6): 569,167,458 (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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