taxes Property Tax

School and Appraisal Districts Property Value Study 2013 Report

2013 Confidence Interval Detail
101/Harris
101-921/Tomball ISD

Category Summary

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

Stratum
Variance
A 781,618,859 0.9365 834,617,041 93 5,595 .004539970
A 883,865,446 0.9372 943,091,598 94 4,389 .007244549
A 932,036,825 0.9463 984,927,428 97 3,295 .005499155
A 1,114,460,396 0.9502 1,172,869,286 90 1,958 .008777095
F1 265,462,122 0.9625 275,804,802 11 403 .110883855
F1 296,571,576 1.0830 273,842,637 10 105 .019132990
F1 238,898,109 1.1166 213,951,378 7 23 .005370118
L1 65,360,412 0.9294 70,325,384 10 759 .020644082
L1 60,925,402 0.9624 63,305,696 9 113 .005654597
L1 58,084,138 1.0181 57,051,506 7 24 .009380852
L1 33,722,076 0.9610 35,090,610 3 3 .000490729
Random Totals: 4,731,005,361   4,924,877,366 431 16,667  
Catg D1 Exception Values: 1,599,514   1,539,079      
Catg F1 Exception Values: 173,474,634   170,429,943      
Total Test Values (4): 4,906,079,509   5,096,846,388      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 254,842,319

Confidence Interval Values (5)

State Lower Limit: 4,842,004,069 (State Test Value minus Margin of Error Percent)
Local Test Value: 4,906,079,509 (Within Confidence Interval)
State Upper Limit: 5,351,688,707 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 6,156,702,544 (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