taxes Property Tax

School and Appraisal Districts Property Value Study 2012 Report

2012 Confidence Interval Detail
057/Dallas
057-913/Lancaster ISD

Category Summary

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

Stratum
Variance
A 258,832,880 0.9969 259,637,757 15 3,870 .001798349
A 232,078,020 1.0067 230,533,446 15 2,518 .002390417
A 180,239,580 1.0274 175,432,723 15 1,611 .005452712
A 170,315,390 1.0449 162,996,832 15 1,111 .003574400
F1 60,594,770 0.9326 64,974,019 8 160 .010108342
F1 63,590,270 0.9016 70,530,468 8 38 .015728764
F1 46,256,540 0.8762 52,792,216 4 7 .004312517
F1 75,597,900 1.0223 73,948,841 3 5 .032994646
L1 45,922,730 1.0091 45,508,602 9 141 .006801170
L1 47,792,660 1.0015 47,721,078 6 11 .060245262
Random Totals: 1,181,220,740   1,184,075,982 98 9,472  
Catg J Exception Values: 88,711,164   90,709,339      
Catg D1 Exception Values: 1,232,401   1,543,745      
Catg L1 Exception Values: 37,269,480   37,301,830      
Total Test Values (4): 1,308,433,785   1,313,630,896      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 65,681,545

Confidence Interval Values (5)

State Lower Limit: 1,247,949,351 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,308,433,785 (Within Confidence Interval)
State Upper Limit: 1,379,312,441 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,464,775,115 (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