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2010 Confidence Interval Detail
079/Fort Bend
079-910/Stafford MSD

Category Summary

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

Stratum
Variance
A 99,198,008 1.0843 91,485,759 14 908 .034902023
A 108,148,720 0.9597 112,690,132 23 770 .010274532
A 99,011,720 1.0481 94,467,818 16 581 .018088793
A 109,826,970 0.9609 114,295,941 18 503 .006979307
B 153,547,446 1.0862 141,362,038 10 24 .004193113
F1 179,195,178 1.0406 172,203,707 10 237 .005900330
F1 165,437,828 1.0265 161,166,905 9 73 .010492583
F1 179,552,749 1.0412 172,447,896 8 34 .011221143
F1 153,838,696 0.9538 161,290,308 5 10 .022837702
L1 75,639,949 1.0316 73,322,944 10 664 .003986759
L1 64,531,790 1.0280 62,774,115 9 76 .008847432
L1 96,922,181 0.9676 100,167,612 7 33 .002100207
L1 76,449,731 0.9805 77,970,149 5 10 .001436083
Random Totals: 1,561,300,966   1,535,645,324 144 3,923  
Catg J Exception Values: 15,334,588   14,527,566      
Catg D1 Exception Values: 39,230   35,847      
Total Test Values (4): 1,576,674,784   1,550,208,737      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 77,510,437

Confidence Interval Values (5)

State Lower Limit: 1,472,698,300 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,576,674,784 (Within Confidence Interval)
State Upper Limit: 1,627,719,174 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,016,539,574 (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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