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2009 Confidence Interval Detail
101/Harris
101-907/Cypress-Fairbanks ISD

Category Summary

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

Stratum
Variance
A 5,105,129,574 1.0364 4,925,829,384 53 44,352 .023375684
A 4,706,690,731 0.9856 4,775,457,316 52 30,803 .009561706
A 4,690,539,007 1.0056 4,664,418,265 54 23,351 .008980708
A 4,912,027,393 0.9854 4,984,805,554 53 14,014 .011871366
B 491,639,796 0.9623 510,900,754 7 67 .001985409
B 462,753,424 1.0149 455,959,626 6 29 .001321805
B 525,832,626 0.9762 538,652,557 5 23 .002282258
B 312,270,949 1.0113 308,781,716 5 11 .003074783
C 141,787,272 0.9501 149,234,051 9 4,594 .011802818
C 149,656,841 0.9480 157,865,866 11 1,403 .016574273
C 176,373,446 0.9635 183,054,952 9 420 .001816766
C 206,586,461 0.9607 215,037,432 9 125 .018348423
D3 412,137,696 0.8719 472,689,180 10 1,309 .071768872
F1 1,684,161,271 0.8945 1,882,796,278 21 1,966 .150853692
F1 1,767,479,341 0.9854 1,793,666,877 15 650 .031007321
F1 1,602,479,797 1.0024 1,598,643,054 16 237 .001319855
F1 1,651,301,134 0.9773 1,689,656,333 16 86 .005272361
L1 780,519,780 1.0579 737,801,097 8 3,394 .031997038
L1 744,695,252 1.0209 729,449,752 7 493 .025304605
L1 766,104,355 0.9620 796,366,273 9 166 .006068373
L1 754,887,648 0.9362 806,331,604 7 49 .023309422
Random Totals: 32,045,053,794   32,377,397,921 382 127,542  
Catg D1 Exception Values: 6,685,561   5,828,440      
Total Test Values (4): 32,051,739,355   32,383,226,361      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,619,161,318

Confidence Interval Values (5)

State Lower Limit: 30,764,065,043 (State Test Value minus Margin of Error Percent)
Local Test Value: 32,051,739,355 (Within Confidence Interval)
State Upper Limit: 34,002,387,679 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 35,037,321,299 (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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