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2007 Confidence Interval Detail
252/Young
252-901/Graham ISD

Category Summary

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

Stratum
Variance
A 58,814,848 0.9594 61,303,782 36 1,492 .045390407
A 58,734,386 0.9672 60,726,206 34 793 .005437796
A 58,733,876 0.9548 61,514,323 15 510 .011669786
A 58,700,141 0.9665 60,734,755 20 279 .011112234
D3 59,464,630 0.9044 65,750,365 35 5,055 .265701329
F1 15,236,812 1.0094 15,094,920 14 186 .034433462
F1 16,100,382 0.9689 16,617,176 16 54 .003109016
F1 17,217,867 1.0070 17,098,180 7 8 .003815205
G1 25,191,140 0.9789 25,734,130 7 303 .026857365
G1 25,216,520 0.9934 25,384,055 7 94 .005426553
G1 26,078,030 1.0114 25,784,091 6 28 .010488603
L1 8,035,352 0.8673 9,264,790 7 199 .131781002
L1 8,039,353 0.9818 8,188,382 6 50 .000337298
L1 8,036,004 0.9801 8,199,167 5 19 .000014171
L1 8,012,180 0.9811 8,166,527 2 3 .000390550
Random Totals: 451,611,521   469,560,849 217 9,073  
Catg J Exception Values: 27,799,603   28,069,684      
Catg D1 Exception Values: 23,846,010   16,852,384      
Catg F1 Exception Values: 8,465,970   8,513,177      
Total Test Values (4): 511,723,104   522,996,094      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 26,149,805

Confidence Interval Values (5)

State Lower Limit: 496,846,289 (State Test Value minus Margin of Error Percent)
Local Test Value: 511,723,104 (Within Confidence Interval)
State Upper Limit: 549,145,899 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 577,294,098 (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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