taxes Property Tax

School and Appraisal Districts Property Value Study 2013 Report

2013 Confidence Interval Detail
101/Harris
101-914/Katy ISD

Category Summary

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

Stratum
Variance
A 1,563,446,367 0.9508 1,644,348,304 141 15,594 .006582504
A 1,885,831,866 0.9699 1,944,357,012 143 13,946 .007302966
A 1,795,272,040 0.9702 1,850,414,389 142 9,316 .007506723
A 2,162,709,605 0.9638 2,243,940,242 135 5,670 .005339328
B 207,684,028 0.8235 252,196,755 7 26 .031218903
B 131,511,679 1.0037 131,026,880 6 7 .002859139
B 132,425,729 0.9596 138,000,968 5 6 .004578755
C1 87,794,297 0.9668 90,809,161 10 441 .015981834
C1 96,810,037 1.0162 95,266,716 13 102 .003905311
C1 89,816,296 0.9934 90,413,022 8 43 .004907025
C1 118,315,247 1.0148 116,589,719 7 25 .002005029
F1 883,475,522 0.9456 934,301,525 12 661 .050665620
F1 933,128,707 1.0302 905,774,322 9 163 .008448364
F1 957,394,530 1.0316 928,067,594 9 54 .041289775
F1 685,660,555 1.0980 624,463,165 5 8 .000373459
L1 220,157,268 0.9333 235,891,212 10 1,376 .001307948
L1 219,216,680 0.9961 220,074,972 10 134 .002337989
L1 151,563,629 0.9817 154,388,947 7 20 .002245675
Random Totals: 12,322,214,082   12,600,324,905 679 47,592  
Catg D1 Exception Values: 3,047,885   2,879,999      
Catg B Exception Values: 175,944,347   166,851,872      
Catg L1 Exception Values: 100,276,915   115,574,858      
Total Test Values (4): 12,601,483,229   12,885,631,634      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 644,281,582

Confidence Interval Values (5)

State Lower Limit: 12,241,350,052 (State Test Value minus Margin of Error Percent)
Local Test Value: 12,601,483,229 (Within Confidence Interval)
State Upper Limit: 13,529,913,216 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 13,691,310,154 (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