taxes Property Tax

School and Appraisal Districts Property Value Study 2012 Report

2012 Confidence Interval Detail
043/Collin
043-903/Celina ISD

Category Summary

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

Stratum
Variance
A 90,307,582 0.9938 90,870,982 10 757 .000884446
A 84,653,073 1.0281 82,339,338 10 480 .028107913
A 92,164,661 1.0357 88,987,797 10 351 .009532747
A 82,735,122 1.0571 78,266,126 9 188 .022398560
D3 173,169,733 0.9171 188,823,174 16 2,758 .009293472
F1 9,543,623 0.9933 9,607,997 10 42 .016210027
F1 9,496,661 0.9068 10,472,718 7 11 .005341607
F1 8,879,519 0.9296 9,551,978 3 4 .000683965
Random Totals: 550,949,974   558,920,110 75 4,591  
Catg D1 Exception Values: 6,551,614   5,339,017      
Catg F1 Exception Values: 7,778,867   10,611,607      
Total Test Values (4): 565,280,455   574,870,734      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 28,743,537

Confidence Interval Values (5)

State Lower Limit: 546,127,197 (State Test Value minus Margin of Error Percent)
Local Test Value: 565,280,455 (Within Confidence Interval)
State Upper Limit: 603,614,271 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 638,116,776 (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, D3, 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