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2006 Confidence Interval Detail
236/Walker
236-902/Huntsville ISD

Category Summary

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

Stratum
Variance
A 190,399,807 0.9537 199,643,291 21 3,382 .014713718
A 190,389,831 0.9386 202,844,482 30 1,843 .003553059
A 190,338,177 0.9690 196,427,427 39 1,311 .007455641
A 190,168,563 0.9673 196,597,295 26 844 .003888655
B 31,649,504 1.0387 30,470,303 7 112 .012574466
B 30,386,788 0.9608 31,626,549 5 18 .013480170
B 35,136,284 1.0776 32,606,054 4 9 .002017640
B 25,972,372 0.9338 27,813,635 2 3 .014781951
D3 192,693,301 0.8880 216,996,961 37 7,404 .020808205
F1 47,428,214 0.9276 51,130,028 7 314 .005160420
F1 47,604,761 0.9833 48,413,262 6 90 .001818170
F1 48,324,647 0.9558 50,559,371 6 36 .005580334
F1 45,565,000 0.9796 46,513,883 4 10 .000649663
L1 24,385,163 1.0720 22,747,354 7 347 .021750131
L1 24,772,489 1.1143 22,231,436 6 56 .026361173
L1 29,093,878 1.0484 27,750,742 5 16 .001181172
Random Totals: 1,344,308,779   1,404,372,073 212 15,795  
Catg D1 Exception Values: 34,848,370   34,186,454      
Catg L1 Exception Values: 30,239,120   28,166,941      
Total Test Values (4): 1,409,396,269   1,466,725,468      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 73,336,273

Confidence Interval Values (5)

State Lower Limit: 1,393,389,195 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,409,396,269 (Within Confidence Interval)
State Upper Limit: 1,540,061,741 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,408,358,232 (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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