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Michiganders Are Poor at Assessing the Size of Minority Populations

Since 1995, Michigan State University’s State of the State Survey has tracked the views of Michigan residents on a wide array of topics.  This Survey is a part of MSU’s Institute for Public Policy and Social Research.  In the 69th round of the State of the State Survey, conducted in 2014, Michigan residents were asked about the relative sizes of minority populations.  The results indicate that Michigan’s people tend to overstate these populations.  In some cases, the overstatement is dramatic.

Data from the U.S. Census show that African Americans represent around 14% of Michigan’s population. However, as we can see from the graph below, most Michigan residents believe the black population to be much larger than that.

About 79% of Michigan residents overstated the African-American percentage of Michigan’s population.  More than half of the respondents said that blacks are more than 29% of the population, which means that a majority of Michigan’s people overstate the African-American population by more than double.  Even more remarkably, more than 10% believe that Michigan has a black majority.  

One possible explanation for these big overstatements is that some residents may give too much weight to the City of Detroit when making their estimates.  In fact, Detroit’s population is around 82% black. However, Detroit’s population has been shrinking for 60 years, and only about 7% of Michigan’s current residents are Detroiters.

Estimates of Muslim PopulationMichigan residents did not do much better when assessing the Muslim population.  In fact, Muslims are a little under 2% of Michigan’s population, but about 80% of the survey respondents gave a higher estimate.

Nearly 40% of the respondents to the State of the State Survey believe Muslims make up more than 10% of the State’s population, and more than 10% believe Muslims make up more than 20% of the State’s population.  A few respondents even believe that Michigan has a Muslim majority.  Once again, a possible explanation is that the respondents’ estimates are swayed by the presence of a city with a large Muslim population.  In this case, the City of Dearborn has one the largest Muslim populations in the nation, but only about 1% of Michiganders live in Dearborn.

Estimates of Gay and Lesbian PopulationFinally, Michigan residents are just as bad at assessing the size of Michigan’s gay and lesbian population.  By one estimate, about 4% of the population is gay or lesbian, but more than 70% of the survey respondents gave a higher estimate.

About one of every six respondents believes that Michigan’s population is more than one-quarter gay or lesbian, and a few even believe that Michigan has a gay majority.

When Michigan’s residents overstate the extent of minority populations, they are not unusual.  These results for Michigan are consistent with results from a number of studies all across the country.