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2008 Confidence Interval Detail
101/Harris
101-912/Houston ISD

Category Summary

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

Stratum
Variance
A 13,516,873,573 0.9913 13,635,502,444 28 131,074 .007894099
A 13,612,115,037 0.9918 13,724,657,226 34 64,157 .008715892
A 14,871,745,047 1.0077 14,758,107,618 27 36,091 .038030779
A 16,846,065,449 0.9615 17,520,608,891 33 14,406 .008052631
B 2,187,133,208 0.9939 2,200,556,603 40 4,662 .004733085
B 2,260,916,548 0.9250 2,444,234,106 6 369 .004805552
B 2,111,104,358 0.8295 2,545,032,379 5 121 .031918690
B 2,672,028,156 0.8525 3,134,343,878 6 72 .013334596
C 656,537,410 0.8129 807,648,432 45 19,909 .714667423
C 733,889,355 0.9220 795,975,439 38 4,596 .029643386
C 894,879,239 0.9275 964,829,368 16 1,543 .012155029
C 954,521,321 0.9239 1,033,143,545 8 224 .050632477
D3 398,522,600 0.9087 438,563,442 10 1,275 .011327424
F1 7,013,048,888 0.9388 7,470,226,766 41 10,354 .025885357
F1 7,465,184,214 0.9162 8,147,985,390 15 1,686 .063634434
F1 6,929,439,670 0.9156 7,568,195,358 8 325 .012667322
F1 9,201,607,884 0.9526 9,659,466,601 5 79 .007888920
L1 2,143,574,239 1.0940 1,959,391,443 9 14,340 .051267161
L1 2,167,333,820 1.0095 2,146,937,910 9 1,764 .000610463
L1 2,493,170,330 0.9389 2,655,416,264 9 491 .019311604
L1 2,178,351,297 1.0026 2,172,702,271 8 89 .002130485
Random Totals: 111,308,041,643   115,783,525,374 400 307,627  
Catg D1 Exception Values: 495,894   502,343      
Total Test Values (4): 111,308,537,537   115,784,027,717      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 5,789,201,386

Confidence Interval Values (5)

State Lower Limit: 109,994,826,331 (State Test Value minus Margin of Error Percent)
Local Test Value: 111,308,537,537 (Within Confidence Interval)
State Upper Limit: 121,573,229,103 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 108,165,053,309 (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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