2009 Confidence Interval Detail
039/Clay
039-903/Petrolia ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 10,889,790 | 1.0437 | 10,433,832 | 10 | 268 | .024354144 |
| A | 11,632,470 | 0.9315 | 12,487,890 | 7 | 149 | .002752611 |
| A | 10,775,760 | 0.9073 | 11,876,733 | 7 | 84 | .006566344 |
| A | 13,926,000 | 1.0059 | 13,844,319 | 10 | 72 | .008030064 |
| D3 | 21,477,730 | 0.9669 | 22,212,980 | 18 | 1,335 | .009890117 |
| G1 | 1,046,170 | 1.1100 | 942,495 | 5 | 21 | .031383620 |
| G1 | 1,176,080 | 1.0308 | 1,140,939 | 4 | 8 | .002155168 |
| G1 | 1,217,280 | 0.9676 | 1,258,041 | 2 | 3 | .004509682 |
| Random Totals: | 72,141,280 | 74,197,229 | 63 | 1,940 | ||
| Catg J Exception Values: | 4,004,870 | 4,452,024 | ||||
| Catg D1 Exception Values: | 8,285,910 | 8,187,630 | ||||
| Catg G1 Exception Values: | 594,290 | 631,066 | ||||
| Total Test Values (4): | 85,026,350 | 87,467,949 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 4,373,397 |
Confidence Interval Values (5)
| State Lower Limit: | 83,094,552 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 85,026,350 | (Within Confidence Interval) |
| State Upper Limit: | 91,841,346 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 87,865,365 | (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