taxes Property Tax Assistance

2017 Confidence Interval Detail

212/Smith
212-909/Chapel Hill ISD

Category Summary

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

Stratum
Variance
A 165,687,635 0.9863 167,989,085 25 1,898 .013310224
A 172,393,795 0.9880 174,487,647 38 978 .004874018
A 187,510,125 0.9970 188,074,348 54 681 .003026657
A 181,369,865 1.0397 174,444,421 15 350 .020601457
B 24,931,933 0.9905 25,171,058 9 124 .001675842
B 16,650,650 0.6256 26,615,489 4 5 .060965305
E 169,317,805 1.0327 163,956,430 13 2,049 .010173004
F1 20,482,192 0.9697 21,122,194 11 136 .041678709
F1 22,045,369 0.9540 23,108,353 9 46 .009248375
F1 20,467,848 0.9676 21,153,212 7 20 .003632599
F1 32,570,454 0.9536 34,155,258 3 6 .000091701
L1 18,533,948 0.8969 20,664,453 10 150 .087133483
L1 13,508,923 0.9269 14,574,305 8 21 .041108596
L1 14,173,877 1.0471 13,536,316 5 8 .000822200
L1 25,152,063 0.7821 32,159,651 2 5 .089176129
Random Totals: 1,084,796,482   1,101,212,220 213 6,477  
Catg D1 Exception Values: 9,757,987   8,689,972      
Catg B Exception Values: 38,007,490   42,526,672      
Total Test Values (4): 1,132,561,959   1,152,428,864      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 57,621,443

Confidence Interval Values (5)

State Lower Limit: 1,094,807,421 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,132,561,959 (Within Confidence Interval)
State Upper Limit: 1,210,050,307 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,207,245,628 (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