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2009 Confidence Interval Detail
212/Smith
212-905/Tyler ISD

Category Summary

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

Stratum
Variance
A 895,931,699 0.9509 942,193,395 73 11,931 .030003048
A 896,004,944 0.9644 929,080,199 75 6,871 .014796923
A 925,023,725 0.9619 961,663,089 73 4,612 .013527009
A 956,530,438 0.9772 978,848,176 70 2,304 .008283072
B 95,009,934 0.9037 105,134,374 23 821 .020356400
B 93,520,090 0.9673 96,681,578 7 73 .012591169
B 87,410,633 0.9666 90,431,029 5 15 .000500132
B 133,466,856 0.9759 136,762,840 4 10 .000432205
F1 419,591,523 0.9297 451,319,268 14 1,431 .004826008
F1 425,704,468 1.0092 421,823,690 7 385 .007294297
F1 430,604,453 0.9458 455,280,665 7 136 .013141118
F1 409,006,688 1.0516 388,937,512 6 42 .002962341
L1 160,220,421 1.0216 156,832,832 9 1,481 .001686339
L1 173,102,568 1.0065 171,984,668 8 323 .001988767
L1 196,070,637 0.9972 196,621,176 6 111 .002904681
L1 240,317,511 1.0001 240,293,482 4 23 .004072957
Random Totals: 6,537,516,588   6,723,887,973 391 30,569  
Catg D1 Exception Values: 11,751,008   9,205,597      
Total Test Values (4): 6,549,267,596   6,733,093,570      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 336,654,679

Confidence Interval Values (5)

State Lower Limit: 6,396,438,891 (State Test Value minus Margin of Error Percent)
Local Test Value: 6,549,267,596 (Within Confidence Interval)
State Upper Limit: 7,069,748,249 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 6,995,025,898 (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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