taxes Property Tax Assistance

2020 Confidence Interval Detail

Grayson County
091-902/Collinsville ISD

Category Summary

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

Stratum
Variance
A 29,417,839 0.9247 31,813,387 10 282 0.006003438
A 31,268,402 0.9575 32,656,295 14 209 0.003954670
A 34,061,953 0.9833 34,640,448 10 172 0.003396136
A 45,134,662 1.0659 42,344,181 11 145 0.070403031
E 78,155,643 1.0701 73,035,831 20 414 0.019791694
Random Totals: 218,038,499 214,490,142 65 1,222
CATG D1 EXCEPTION VALUES: 2,899,347 1,807,939
CATG J EXCEPTION VALUES: 9,402,614 10,479,276
Total Test Values 230,340,460 226,777,357

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 11,338,868

Confidence Interval Values(5)

Local Test Value: 230,340,460 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 215,438,489 (State Test Value minus Margin of Error Percent)
State Upper Limit: 238,116,225 (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