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2009 Confidence Interval Detail
188/Potter
188-902/River Road ISD

Category Summary

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

Stratum
Variance
A 46,520,111 0.9553 48,696,861 17 615 .077209792
A 48,419,267 1.0229 47,335,289 14 442 .043862973
A 52,745,055 1.0327 51,074,906 18 398 .028713686
A 53,548,667 1.0314 51,918,428 11 300 .033949066
G1 14,281,450 1.0128 14,100,958 6 42 .000240711
Random Totals: 215,514,550   213,126,442 66 1,797  
Catg J Exception Values: 9,242,009   8,988,186      
Catg D1 Exception Values: 2,886,597   3,460,619      
Catg G1 Exception Values: 10,949,891   10,359,264      
Total Test Values (4): 238,593,047   235,934,511      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 11,796,726

Confidence Interval Values (5)

State Lower Limit: 224,137,785 (State Test Value minus Margin of Error Percent)
Local Test Value: 238,593,047 (Within Confidence Interval)
State Upper Limit: 247,731,237 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 237,550,730 (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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