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2011 Confidence Interval Detail
086/Gillespie
086-902/Harper ISD

Category Summary

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

Stratum
Variance
A 9,922,004 0.8924 11,118,337 10 145 .020212925
A 10,581,970 0.9192 11,512,152 10 94 .015964427
A 9,038,180 0.9478 9,535,957 10 56 .010570533
A 9,744,310 1.0027 9,718,071 10 35 .006718992
D3 225,246,922 0.9870 228,213,700 19 3,985 .019593405
Random Totals: 264,533,386   270,098,217 59 4,315  
Catg D1 Exception Values: 8,586,784   9,685,847      
Total Test Values (4): 273,120,170   279,784,064      

Margin of Error

Margin of Error Percent: 5.2663321
Margin of Error Value: 14,734,358

Confidence Interval Values (5)

State Lower Limit: 265,049,706 (State Test Value minus Margin of Error Percent)
Local Test Value: 273,120,170 (Within Confidence Interval)
State Upper Limit: 294,518,422 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 279,932,188 (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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