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091/Grayson
2016 Confidence Interval Detail
091/Grayson
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 | 15,547,031 | 1.0200 | 15,242,187 | 10 | 250 | .008474025 |
| A | 17,606,849 | 0.9693 | 18,164,499 | 14 | 180 | .017199915 |
| A | 22,744,658 | 0.9713 | 23,416,718 | 9 | 172 | .007549454 |
| A | 33,153,770 | 0.9545 | 34,734,175 | 9 | 143 | .007143717 |
| D2 | 8,157,625 | 1.0361 | 7,873,395 | 14 | 294 | .033357917 |
| E | 48,204,539 | 1.0821 | 44,547,213 | 14 | 394 | .043688367 |
| Random Totals: | 145,414,472 | 143,978,187 | 70 | 1,433 | ||
| Catg J Exception Values: | 8,882,501 | 9,769,093 | ||||
| Catg D1 Exception Values: | 3,116,875 | 2,706,268 | ||||
| Total Test Values (4): | 157,413,848 | 156,453,548 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 7,822,677 |
Confidence Interval Values (5)
| State Lower Limit: | 148,630,871 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 157,413,848 | (Within Confidence Interval) |
| State Upper Limit: | 164,276,225 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 150,886,461 | (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