2009 Confidence Interval Detail
045/Colorado
045-902/Columbus ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 58,526,040 | 0.9053 | 64,648,227 | 12 | 852 | .019690625 |
| A | 59,585,090 | 0.9894 | 60,223,459 | 8 | 477 | .008638221 |
| A | 60,994,270 | 0.9975 | 61,147,138 | 15 | 346 | .022341411 |
| A | 56,586,130 | 1.0058 | 56,259,823 | 8 | 206 | .003913783 |
| D3 | 242,755,657 | 0.9566 | 253,769,242 | 31 | 7,256 | .072734927 |
| F1 | 16,615,800 | 1.0161 | 16,352,524 | 7 | 156 | .001766317 |
| F1 | 18,442,020 | 0.9677 | 19,057,580 | 6 | 58 | .013404837 |
| F1 | 17,929,570 | 0.9548 | 18,778,351 | 5 | 21 | .004780810 |
| F1 | 18,607,820 | 0.8655 | 21,499,503 | 4 | 10 | .018780535 |
| G1 | 9,630,819 | 1.0027 | 9,604,886 | 5 | 19 | .004073489 |
| G1 | 9,606,548 | 1.3839 | 6,941,649 | 4 | 7 | .411667364 |
| Random Totals: | 569,279,764 | 588,282,382 | 105 | 9,408 | ||
| Catg J Exception Values: | 20,312,316 | 21,244,769 | ||||
| Catg D1 Exception Values: | 23,895,590 | 22,327,119 | ||||
| Catg G1 Exception Values: | 32,426,580 | 31,713,518 | ||||
| Total Test Values (4): | 645,914,250 | 663,567,788 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 33,178,389 |
Confidence Interval Values (5)
| State Lower Limit: | 630,389,399 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 645,914,250 | (Within Confidence Interval) |
| State Upper Limit: | 696,746,177 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 699,531,938 | (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