taxes Property Tax Assistance

2018 Confidence Interval Detail

070/Ellis
070-911/Red Oak ISD

Category Summary

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

Stratum
Variance
A 226,220,794 0.8529 265,237,184 32 1,658 .018609227
A 360,067,249 0.9394 383,294,921 50 2,024 .006313914
A 503,800,146 0.9495 530,595,204 55 2,265 .006947316
A 519,771,348 0.9895 525,286,860 41 1,553 .002989373
F1 30,424,290 0.7109 42,796,863 10 114 .135055394
F1 39,314,958 0.7348 53,504,298 11 47 .075044211
F1 28,734,680 0.6759 42,513,212 5 15 .059558975
F1 29,126,230 0.7527 38,695,669 4 5 .033681636
Random Totals: 1,737,459,695   1,881,924,211 208 7,681  
Catg D1 Exception Values: 1,953,712   1,282,243      
Total Test Values (4): 1,739,413,407   1,883,206,454      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 94,160,322

Confidence Interval Values (5)

Local Test Value: 1,739,413,407 (Outside Confidence Interval)
State Lower Limit: 1,789,046,132 (State Test Value minus Margin of Error Percent)
State Upper Limit: 1,977,366,776 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,797,712,862 (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