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2007 Confidence Interval Detail
227/Travis
227-907/Manor ISD

Category Summary

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

Stratum
Variance
A 216,832,220 0.9074 238,959,907 12 1,938 .003148992
A 216,848,465 0.9249 234,456,120 17 1,323 .004204229
A 217,214,674 0.9718 223,517,878 24 1,089 .003949818
A 216,304,967 0.9743 222,010,640 36 808 .006329882
B 20,141,029 1.0142 19,859,031 6 18 .020193959
D3 126,352,924 0.9813 128,760,750 12 1,756 .026127876
F1 118,751,127 1.0699 110,992,735 7 126 .007214272
F1 117,196,443 0.9803 119,551,610 6 39 .040301260
F1 123,771,545 1.0458 118,351,066 7 19 .033562212
F1 109,656,175 1.0839 101,168,166 5 9 .015679763
L1 110,668,934 0.9847 112,388,478 8 239 .002689940
L1 111,958,768 0.9609 116,514,484 6 55 .010833297
L1 115,451,940 0.9910 116,500,444 6 18 .003246954
L1 100,252,916 0.9959 100,665,645 3 6 .000293442
Random Totals: 1,921,402,127   1,963,696,954 155 7,443  
Catg D1 Exception Values: 4,262,878   3,555,430      
Catg B Exception Values: 103,996,491   107,934,163      
Total Test Values (4): 2,029,661,496   2,075,186,547      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 103,759,327

Confidence Interval Values (5)

State Lower Limit: 1,971,427,220 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,029,661,496 (Within Confidence Interval)
State Upper Limit: 2,178,945,874 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,394,691,977 (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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