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2006 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 105,024,891 0.9627 109,094,101 13 969 .001805229
A 105,221,801 0.9798 107,391,101 10 747 .002717606
A 104,737,547 0.9853 106,300,159 18 618 .000834024
A 104,971,319 0.9743 107,740,243 15 508 .001573260
B 137,946,690 0.9451 145,959,888 7 29 .000214885
F1 137,392,628 0.9565 143,641,012 7 199 .003278925
F1 138,458,168 1.0319 134,177,893 9 67 .003275416
F1 136,286,286 1.0615 128,390,284 8 29 .014792180
F1 136,062,031 1.0388 130,980,007 4 11 .001875164
L1 70,424,834 0.9498 74,147,014 8 319 .032154398
L1 70,061,927 1.0179 68,829,872 7 58 .022328688
L1 74,245,343 1.0784 68,847,685 5 24 .011540421
L1 65,569,272 0.9815 66,805,168 4 8 .000739150
Random Totals: 1,386,402,737   1,392,304,427 115 3,586  
Catg D1 Exception Values: 44,400   49,770      
Total Test Values (4): 1,386,447,137   1,392,354,197      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 69,617,710

Confidence Interval Values (5)

State Lower Limit: 1,322,736,487 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,386,447,137 (Within Confidence Interval)
State Upper Limit: 1,461,971,907 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,667,245,376 (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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