taxes Property Tax Assistance

2019 Confidence Interval Detail

Ellis County
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 309,380,261 0.9169 337,419,851 50 1980 0.014945806
A 420,975,489 0.9550 440,812,030 72 2094 0.012769111
A 543,597,709 0.9835 552,717,549 70 2202 0.005348234
A 531,260,775 0.9992 531,686,124 70 1462 0.009281222
F1 33,319,760 0.9132 36,486,816 10 116 0.008818680
F1 37,840,906 0.9658 39,180,893 8 46 0.039805799
F1 58,053,210 0.9380 61,890,416 7 33 0.048851045
F1 30,935,760 0.9029 34,262,665 4 5 0.074177249
Random Totals: 1,965,363,870 2,034,456,344 291 7,938
CATG D1 EXCEPTION VALUES: 1,644,326 835,211
Total Test Values(1) 1,967,008,196 2,035,291,555

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 101,764,578

Confidence Interval Values(5)

Local Test Value: 1,967,008,196 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 1,933,526,977 (State Test Value minus Margin of Error Percent)
State Upper Limit: 2,137,056,133 (State Test Value plus Margin of Error Percent)

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