Holiday Hours
Quick Start for:

2009 Confidence Interval Detail
091/Grayson
091-913/Pottsboro ISD

Category Summary

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

Stratum
Variance
A 106,029,617 1.0025 105,765,204 40 1,616 .021895660
A 104,792,002 1.0053 104,239,532 20 805 .000173824
A 112,958,574 0.9624 117,371,752 23 552 .008513011
A 109,225,537 1.0010 109,116,421 15 279 .000296240
D3 71,739,618 0.8542 83,984,568 12 1,684 .185348684
F1 13,891,196 0.8123 17,101,066 8 116 .080817479
F1 14,354,688 0.8050 17,831,911 8 33 .103430689
F1 25,199,344 0.8616 29,247,149 4 12 .037935125
G1 11,247,135 1.0077 11,161,194 6 28 .003934383
G1 11,421,022 0.9492 12,032,261 4 12 .008738311
G1 11,682,434 1.0394 11,239,594 5 7 .004936404
G1 10,618,430 0.9998 10,620,554 3 4 .000652702
Random Totals: 603,159,597   629,711,206 148 5,148  
Catg D1 Exception Values: 3,239,981   2,303,833      
Catg F1 Exception Values: 6,000,000   6,538,744      
Total Test Values (4): 612,399,578   638,553,783      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 31,927,689

Confidence Interval Values (5)

State Lower Limit: 606,626,094 (State Test Value minus Margin of Error Percent)
Local Test Value: 612,399,578 (Within Confidence Interval)
State Upper Limit: 670,481,472 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 650,261,676 (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

Required Plug-ins