taxes Property Tax

School and Appraisal Districts Property Value Study 2014 Report

2014 Confidence Interval Detail
043/Collin
043-901/Allen ISD

Category Summary

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

Stratum
Variance
A 1,044,734,105 0.9483 1,101,691,559 100 6,669 .007013681
A 1,676,903,196 0.9565 1,753,165,913 100 7,869 .015742629
A 1,648,027,743 0.9551 1,725,502,820 99 5,471 .013343975
A 1,857,764,277 0.9773 1,900,915,049 100 3,800 .003051067
B 72,574,867 0.9062 80,087,030 7 13 .079129733
B 79,185,858 0.8983 88,150,794 2 3 .013931682
F1 297,164,046 0.9888 300,529,982 10 209 .003507604
F1 310,996,579 0.9400 330,847,424 11 78 .008475926
F1 301,134,150 0.8925 337,405,210 8 23 .026743391
L1 143,807,894 1.0116 142,158,851 10 592 .000644620
L1 133,633,373 1.0070 132,704,442 9 77 .000712973
L1 154,555,324 1.0405 148,539,475 6 19 .001552719
Random Totals: 7,720,481,412   8,041,698,549 462 24,823  
Catg D1 Exception Values: 551,326   557,686      
Catg B Exception Values: 222,234,428   239,669,984      
Catg F1 Exception Values: 214,096,933   219,223,469      
Catg L1 Exception Values: 136,337,147   138,172,765      
Total Test Values (4): 8,293,701,246   8,639,322,453      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 431,966,123

Confidence Interval Values (5)

State Lower Limit: 8,207,356,330 (State Test Value minus Margin of Error Percent)
Local Test Value: 8,293,701,246 (Within Confidence Interval)
State Upper Limit: 9,071,288,576 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 9,132,881,458 (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