taxes Property Tax Assistance

2020 Confidence Interval Detail

Ellis County
070-905/Ferris ISD

Category Summary

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

Stratum
Variance
A 75,412,948 0.8241 91,509,462 13 926 0.059925443
A 109,022,650 0.9557 114,076,227 16 776 0.037566707
A 111,940,942 0.9694 115,474,460 32 548 0.015870999
A 113,815,926 0.9688 117,481,344 27 381 0.008691223
E 117,713,669 1.0227 115,100,879 20 1,054 0.095360895
F1 9,507,574 0.7299 13,025,858 10 55 0.083559736
F1 7,921,564 0.9883 8,015,344 6 18 0.048045485
F1 7,884,550 0.9231 8,541,382 6 9 0.070083675
F1 8,234,070 1.0799 7,624,845 2 3 0.009988646
Random Totals: 561,453,893 590,849,801 132 3,770
CATG D1 EXCEPTION VALUES: 7,005,505 2,996,599
Total Test Values 568,459,398 593,846,400

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 29,692,320

Confidence Interval Values(5)

Local Test Value: 568,459,398 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 564,154,080 (State Test Value minus Margin of Error Percent)
State Upper Limit: 623,538,720 (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