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2007 Confidence Interval Detail
237/Waller
237-902/Hempstead ISD

Category Summary

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

Stratum
Variance
A 29,512,730 0.9438 31,270,110 15 778 .036151996
A 29,558,588 0.9628 30,700,652 15 390 .009260940
A 29,396,831 0.9382 31,333,224 15 248 .017728289
A 29,484,292 0.9743 30,262,026 17 147 .009751723
D3 133,469,910 1.0541 126,619,780 20 4,220 .150131404
F1 11,959,283 0.9200 12,999,221 8 131 .025281290
F1 12,131,731 0.8988 13,497,698 6 40 .045132904
F1 12,222,784 1.0001 12,221,562 5 14 .001338651
F1 11,234,143 1.0473 10,726,767 2 3 .001751561
L1 6,355,014 1.1191 5,678,683 7 152 .015288724
L1 6,208,293 1.2395 5,008,708 7 31 .036144274
L1 7,038,006 0.9749 7,219,208 4 11 .005421332
L1 5,392,649 1.1102 4,857,367 2 3 .000451717
Random Totals: 323,964,254   322,395,006 123 6,168  
Catg D1 Exception Values: 10,460,580   10,340,253      
Total Test Values (4): 334,424,834   332,735,259      

Margin of Error

Margin of Error Percent: 6.6833082
Margin of Error Value: 22,237,723

Confidence Interval Values (5)

State Lower Limit: 310,497,536 (State Test Value minus Margin of Error Percent)
Local Test Value: 334,424,834 (Within Confidence Interval)
State Upper Limit: 354,972,982 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 374,479,962 (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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