Merged at MCD Group level.
There exists a possible mismatch in MCDGRP 580. CENSPREC "Goldwater" is matched to electoral precinct "Coldwater" as a possible misspelling. This is the only electoral precinct match in MCDGRP 580. MCDGRP is marked as questionable in all four data sets.
Also, there exist some data where CENSPRECs "ANAME CITY" and "ANAME TWP." were split between two separate MCDGRPs, but the electoral precinct names did not specify "TWP." or "CITY". A best estimate was made based on any numbers or precinct letters associated with the data, or patterns existing elsewhere in the same county. The MCDGRP pairs affected are listed below, along with the relative expected error (surplus or deficit) in the amount of electoral information associated with that MCDGRP.
SURPLUS DEFICIT 048 049 308 307 318 317 479 478 769 768 1270 1269
There exist a lot of MDCDGRPs in the 1990 data set with out any usable electoral precinct matches. A common motif running among them is that they are made up of only one CENSPREC, and this CENSPREC has exactly two 901-(AV) matches (which are discarded because these should be absentees). In other CENSPRECs where usable matches are made there is only one 901-(AV) match and one usable match. Perhaps one of these two 901-(AV) matches is not really a 901-(AV) but a normal electoral precinct mislabeled.
There are eighteen occurrences. They are all empty of electoral data and so are marked questionable in 1990. They are MCDGRPs: 62, 67, 68, 95, 97, 102, 234, 235, 242, 249, 289, 456, 459, 542, 635, 801, 1078, and 1084.
Very often, two CENSPREC have the same name but for the addition of "city of" (e.g. Harrisville and Harrisville, city of). When such CENSPRECs have different MCDGRPS, they were matched based on whether the word "city" was part of the electoral precinct name. Otherwise, whether the word city was included or not was ignored (e.g. in county 5, electoral precinct "Holland" was matched with CENSPREC "Holland, city of" because there is no CENSPREC "Holland.")
Precincts ending in (AV), usually preceded by 901 or some other 900 number, are absentee precincts. None of these were matched. In MATH86MI, some (very few) of the 901s are not followed by (AV), but they appear to follow the pattern of absentee precincts, so they were not matched either.
Plainwell-901(AV) is an absentee precinct and should not be matched,but was matched before hand-matching was begun.
| Copyright © 1997-2004 | [ROAD Home] | Questions? Contact the ROAD webmaster. |