taxes Property Tax Assistance

2017 Confidence Interval Detail

220/Tarrant
220-907/Keller ISD

Category Summary

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

Stratum
Variance
A 2,927,763,118 0.9507 3,079,586,745 516 16,923 .007270998
A 3,961,626,056 0.9638 4,110,423,382 496 15,892 .005872161
A 3,959,043,885 0.9721 4,072,671,418 489 10,690 .006042277
A 3,766,391,182 0.9763 3,857,821,553 300 5,323 .007772228
B 53,438,336 0.8563 62,406,091 5 4 .008408539
B 143,034,946 0.9712 147,276,509 5 6 .005370256
B 194,400,000 0.9960 195,180,723 4 6 .020269433
C1 54,332,649 0.5240 103,688,261 13 404 .084389175
C1 51,456,483 0.5972 86,162,899 11 138 .174113480
C1 67,713,473 0.8468 79,963,950 11 89 .119047378
C1 88,110,258 0.9519 92,562,515 9 34 .011413837
F1 450,959,878 0.8522 529,171,413 11 411 .050795391
F1 517,804,893 0.9177 564,242,010 9 172 .086128553
F1 594,914,502 0.8718 682,397,915 8 63 .027509528
F1 542,630,426 0.8872 611,621,310 5 11 .017197124
L1 132,002,211 1.0829 121,896,954 11 747 .048470283
L1 132,068,004 1.0524 125,492,212 10 116 .011573056
L1 144,789,005 0.9986 144,991,994 7 24 .001923991
Random Totals: 17,782,479,305   18,667,557,854 1,920 51,053  
Catg D1 Exception Values: 310,373   137,381      
Catg B Exception Values: 177,674,683   184,917,127      
Catg L1 Exception Values: 115,631,337   107,983,314      
Total Test Values (4): 18,076,095,698   18,960,595,676      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 948,029,783

Confidence Interval Values (5)

State Lower Limit: 18,012,565,893 (State Test Value minus Margin of Error Percent)
Local Test Value: 18,076,095,698 (Within Confidence Interval)
State Upper Limit: 19,908,625,459 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 16,560,884,632 (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, D2, E, 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