* Recorded changes between years in the percentage favoring removal are not all statistically significant (p < .05). For example, for no type of book did the percentage change to a statistically significant degree from 2010 to 2012. However, for every type of book other than that advocating the inferiority of African Americans, the difference between the percentage favoring removal in 2012 is statistically significantly different from the percentage who favored such action in the first year the question was asked.
Source: NORC at the University of Chicago, General Social Survey (1973–2012). Analyzed using the Survey Documentation and Analysis tool.