Source: Economist -

SPECIFIC EVENT: death of commerce secretary Ron Brown

SPECIFIC VARIABLE: % black voters for Democrat

SPECIFIC QUESTION: "What will the loss of the administration's most prominent black do to its appeal among black voters?"

SPECIFIC ANSWER: "The chart shows why this question is so little debated. The black vote is astonishingly loyal to the Democratic party."

GENERIC QUESTION: will an event change a variable significantly?


COMMENT: this chart raises the question of what constant means. the percentage of black voters voting democrat changes a lot in the interval 80%-100%, but these changes are not considered in the article. This shows that "constant" can have (be used with) different meanings in different contexts.