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2009 Confidence Interval Detail
211/Sherman
211-902/Stratford ISD

Category Summary

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

Stratum
Variance
A 8,699,160 1.1347 7,666,485 7 264 .017730497
A 8,559,020 0.8936 9,578,133 7 145 .027691400
A 8,950,820 0.9392 9,530,260 10 103 .041743529
A 8,953,280 0.8996 9,952,512 11 57 .015337050
D3 8,529,850 0.9837 8,671,190 13 1,444 .004862928
G1 58,603,590 1.0083 58,121,184 10 175 .006194991
G1 58,626,420 1.0435 56,182,482 8 89 .002627998
G1 58,919,110 1.0332 57,025,852 8 58 .007275730
G1 57,219,220 1.0690 53,525,931 7 29 .014712639
Random Totals: 277,060,470   270,254,029 81 2,364  
Catg J Exception Values: 18,156,500   25,515,169      
Catg D1 Exception Values: 51,381,310   46,800,912      
Total Test Values (4): 346,598,280   342,570,110      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 17,128,506

Confidence Interval Values (5)

State Lower Limit: 325,441,604 (State Test Value minus Margin of Error Percent)
Local Test Value: 346,598,280 (Within Confidence Interval)
State Upper Limit: 359,698,616 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 435,137,503 (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

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