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2009 Confidence Interval Detail
079/Fort Bend
079-907/Fort Bend ISD

Category Summary

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

Stratum
Variance
A 4,038,386,377 0.9830 4,108,226,223 49 33,517 .006552104
A 4,090,228,083 0.9913 4,126,125,374 48 23,623 .004442898
A 4,622,924,736 0.9778 4,727,883,755 53 17,949 .007042571
A 4,941,503,267 0.9549 5,174,890,844 50 10,195 .005002521
B 137,730,335 1.0395 132,496,715 7 144 .000121745
B 77,392,830 0.8935 86,617,605 5 5 .005452049
B 89,422,470 0.9721 91,988,962 3 5 .001871254
C 129,425,110 1.0388 124,590,980 30 1,736 .008287121
C 134,972,310 0.9857 136,930,415 7 289 .001373801
C 105,788,850 0.9152 115,590,964 7 87 .020066651
C 128,639,390 0.9936 129,467,985 6 39 .000750841
F1 725,900,718 0.9150 793,334,118 8 768 .023421278
F1 732,898,996 1.0295 711,898,005 7 253 .008883306
F1 748,501,983 0.9880 757,593,100 7 96 .005081230
F1 678,310,051 0.9768 694,420,609 6 25 .015432420
L1 170,698,006 1.0002 170,663,873 8 2,921 .006884105
L1 165,318,362 1.0545 156,774,170 8 387 .004373362
L1 189,561,129 0.9415 201,339,489 8 121 .010414904
L1 230,821,546 0.9904 233,058,912 6 36 .003663507
Random Totals: 22,138,424,549   22,673,892,098 323 92,196  
Catg D1 Exception Values: 5,416,590   4,378,232      
Catg B Exception Values: 127,743,680   130,053,666      
Total Test Values (4): 22,271,584,819   22,808,323,996      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,140,416,200

Confidence Interval Values (5)

State Lower Limit: 21,667,907,796 (State Test Value minus Margin of Error Percent)
Local Test Value: 22,271,584,819 (Within Confidence Interval)
State Upper Limit: 23,948,740,196 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 23,355,814,802 (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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