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2011 Confidence Interval Detail
101/Harris
101-913/Humble ISD

Category Summary

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

Stratum
Variance
A 2,083,256,204 0.9543 2,183,020,228 30 17,549 .004040967
A 2,016,084,242 0.9485 2,125,550,071 42 12,246 .007314876
A 2,039,428,451 0.9700 2,102,503,558 39 9,049 .006829612
A 2,056,073,182 0.9341 2,201,127,483 46 5,128 .011840253
B 109,965,861 0.9129 120,457,729 9 35 .009387294
B 113,643,958 0.9526 119,298,717 7 9 .003732957
B 81,343,001 1.0052 80,922,206 4 5 .002877732
F1 288,582,574 0.9678 298,184,102 10 514 .004102755
F1 289,885,765 0.9691 299,128,846 9 178 .004618761
F1 275,401,062 0.9435 291,893,017 9 76 .004957347
F1 326,842,554 0.9873 331,046,849 7 31 .002487133
L1 93,262,483 0.9713 96,018,205 10 1,076 .004293967
L1 100,583,823 0.9761 103,046,638 11 205 .002797034
L1 100,130,875 0.9716 103,057,714 10 59 .005463777
L1 99,165,528 0.9736 101,854,486 7 19 .002306039
Random Totals: 10,073,649,563   10,557,109,849 250 46,179  
Catg D1 Exception Values: 10,996,386   11,004,686      
Catg B Exception Values: 102,691,044   101,463,470      
Total Test Values (4): 10,187,336,993   10,669,578,005      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 533,478,900

Confidence Interval Values (5)

State Lower Limit: 10,136,099,105 (State Test Value minus Margin of Error Percent)
Local Test Value: 10,187,336,993 (Within Confidence Interval)
State Upper Limit: 11,203,056,905 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 9,957,013,864 (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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