taxes Property Tax

School and Appraisal Districts Property Value Study 2015 Report

2015 Confidence Interval Detail
061/Denton
061-911/Northwest ISD

Category Summary

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

Stratum
Variance
A 581,742,150 0.9418 617,691,814 112 3,844 .005104342
A 666,594,928 0.9583 695,601,511 94 2,860 .005809376
A 721,883,702 0.9499 759,957,577 96 2,174 .004910865
A 934,875,940 0.9658 967,980,886 75 1,760 .003474756
F1 195,813,340 1.0043 194,974,948 10 313 .000418217
F1 182,785,970 0.8613 212,221,026 8 45 .053598920
F1 165,835,053 0.8321 199,297,023 6 14 .042117514
F1 373,299,724 0.9802 380,840,363 4 16 .002666093
G1 168,084,922 0.9653 174,127,134 13 401 .078364773
G1 168,212,111 1.0030 167,708,984 12 172 .011107315
G1 169,939,753 1.0317 164,718,186 13 98 .011206114
G1 165,631,474 1.0326 160,402,357 8 45 .008250562
L1 141,140,326 0.9521 148,241,073 9 71 .030239450
L1 112,042,494 1.0610 105,600,843 4 5 .001779546
Random Totals: 4,747,881,887   4,949,363,725 464 11,818  
Catg D1 Exception Values: 5,315,660   5,825,687      
Catg L1 Exception Values: 507,939,975   505,915,947      
Total Test Values (4): 5,261,137,522   5,461,105,359      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 273,055,267

Confidence Interval Values (5)

State Lower Limit: 5,188,050,092 (State Test Value minus Margin of Error Percent)
Local Test Value: 5,261,137,522 (Within Confidence Interval)
State Upper Limit: 5,734,160,626 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 5,804,350,926 (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