taxes Property Tax Assistance

2017 Confidence Interval Detail

240/Webb
240-904/Webb CISD

Category Summary

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

Stratum
Variance
G1 54,065,034 1.0332 52,327,753 15 562 .010191809
G1 53,702,548 1.0349 51,891,533 15 182 .023515153
G1 54,231,817 1.0214 53,095,572 15 97 .003694890
G1 53,467,798 1.1173 47,854,469 15 44 .073634545
Random Totals: 215,467,197   205,169,327 60 885  
Catg J Exception Values: 21,381,300   21,348,057      
Catg D1 Exception Values: 25,448,268   30,827,514      
Total Test Values (4): 262,296,765   257,344,898      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 12,867,244

Confidence Interval Values (5)

State Lower Limit: 244,477,654 (State Test Value minus Margin of Error Percent)
Local Test Value: 262,296,765 (Within Confidence Interval)
State Upper Limit: 270,212,142 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 579,584,054 (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