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2008 Confidence Interval Detail
113/Houston
113-901/Crockett ISD

Category Summary

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

Stratum
Variance
A 32,860,820 0.9603 34,219,327 7 958 .033434925
A 34,671,710 0.9062 38,260,550 7 616 .004986934
A 37,411,380 0.9533 39,244,078 7 400 .027266987
A 38,228,890 1.0681 35,791,490 7 201 .010046430
D3 75,686,650 0.9465 79,964,765 18 3,679 .012105236
F1 16,328,810 0.9452 17,275,508 7 171 .005738658
F1 15,699,940 1.0279 15,273,801 7 45 .017723905
F1 19,648,830 1.0254 19,162,112 7 16 .004002240
L1 8,992,510 0.9973 9,016,856 7 217 .000435492
L1 10,231,380 1.0046 10,184,531 9 63 .002949259
L1 8,312,500 1.0802 7,695,334 5 17 .016765225
L1 8,423,820 1.0131 8,314,895 2 4 .000569040
Random Totals: 306,497,240   314,403,247 90 6,387  
Catg J Exception Values: 14,131,971   13,593,068      
Catg D1 Exception Values: 14,856,190   16,023,559      
Catg F1 Exception Values: 16,750,140   18,714,924      
Total Test Values (4): 352,235,541   362,734,798      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 18,136,740

Confidence Interval Values (5)

State Lower Limit: 344,598,058 (State Test Value minus Margin of Error Percent)
Local Test Value: 352,235,541 (Within Confidence Interval)
State Upper Limit: 380,871,538 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 390,058,803 (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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