taxes Property Tax

School and Appraisal Districts Property Value Study 2015 Report

2015 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 2,510,004,776 0.9050 2,773,485,940 250 17,719 .014567912
A 2,760,651,571 0.8988 3,071,485,949 250 13,389 .014065063
A 2,695,238,236 0.9091 2,964,732,412 250 8,787 .013344644
A 2,787,000,273 0.9022 3,089,115,798 250 4,612 .024545785
B 144,302,175 0.9412 153,317,228 6 25 .005604644
B 125,916,026 0.9737 129,317,065 3 6 .009461047
B 53,221,986 0.9697 54,885,002 2 2 .012587557
C1 54,477,308 1.0043 54,244,059 7 486 .005686203
C1 51,981,149 0.9500 54,716,999 7 160 .009343895
C1 44,089,368 0.9668 45,603,401 8 69 .026492621
C1 72,226,597 0.9927 72,757,728 7 38 .000577455
F1 373,718,050 0.9818 380,645,804 11 410 .022768550
F1 368,664,735 0.9098 405,215,141 9 150 .009103143
F1 379,992,397 0.9123 416,521,316 8 50 .016797632
F1 492,603,266 0.9075 542,813,516 6 15 .006805390
L1 74,656,455 1.0570 70,630,516 10 422 .068311609
L1 93,299,024 1.0407 89,650,258 9 86 .028120853
L1 148,302,165 1.0456 141,834,511 8 27 .005876864
Random Totals: 13,230,345,557   14,510,972,643 1,101 46,453  
Catg D1 Exception Values: 319,164   165,429      
Catg B Exception Values: 93,096,260   88,948,310      
Catg L1 Exception Values: 106,191,276   104,843,135      
Total Test Values (4): 13,429,952,257   14,704,929,517      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 735,246,475

Confidence Interval Values (5)

Local Test Value: 13,429,952,257 (Outside Confidence Interval)
State Lower Limit: 13,969,683,042 (State Test Value minus Margin of Error Percent)
State Upper Limit: 15,440,175,992 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 13,123,523,116 (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