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2011 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 70,397,820 0.8982 78,376,553 21 1,788 .035702332
A 70,969,000 0.8367 84,820,127 19 948 .022700906
A 70,805,150 0.9458 74,862,709 17 590 .015283171
A 72,150,660 1.0135 71,189,600 10 309 .049279660
D3 57,196,010 0.9209 62,108,817 15 4,841 .038384196
F1 17,441,400 0.8441 20,662,718 11 271 .136079435
F1 18,087,780 0.8632 20,954,333 11 84 .048295241
F1 16,408,800 0.9605 17,083,602 9 18 .030042620
F1 17,640,440 0.8979 19,646,330 3 5 .010757887
G1 21,417,290 0.9625 22,251,730 10 237 .040951917
G1 21,611,560 1.0031 21,544,771 9 83 .004090164
G1 21,649,320 0.9755 22,193,050 8 31 .053386920
G1 20,860,091 0.9875 21,124,143 4 6 .005203284
L1 11,568,480 1.0099 11,455,075 11 169 .012300798
L1 11,865,950 1.0179 11,657,285 11 48 .014006259
L1 20,249,100 1.0580 19,139,036 6 11 .005031423
Random Totals: 540,318,851   579,069,879 175 9,439  
Catg J Exception Values: 4,189,371   3,969,361      
Catg D1 Exception Values: 25,173,530   25,422,462      
Catg G1 Exception Values: 33,693,470   32,728,818      
Total Test Values (4): 603,375,222   641,190,520      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 32,059,526

Confidence Interval Values (5)

Local Test Value: 603,375,222 (Outside Confidence Interval)
State Lower Limit: 609,130,994 (State Test Value minus Margin of Error Percent)
State Upper Limit: 673,250,046 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 654,755,561 (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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