Final answer:
The question involves analyzing statistical data on voting demographics to aid a congressional candidate's campaign, focusing on past voter behavior for white voters in congressional elections, poitical polling, and targeted campaign strategies.
Step-by-step explanation:
The question relates to a business analyst researching voting demographics for a congressional candidate and seeks to understand which graphic represents the percentage of all white voters who voted in congressional elections. It seems to revolve around the interpretation of statistical data, likely gathered through polls, to inform campaign strategies.
Political analysts use data on individuals and groups to predict voter behavior. Campaign managers target voter groups most likely to vote, and statisticians create polls that provide insights into voter proportions on various issues or support for candidates. For instance, in determining the proportion of college students who voted in a presidential election, a survey would need to target a sufficient number of students to ensure a 95 percent confidence level with a margin of error no greater than 5 percent. Similarly, political pollsters may focus on the proportion of people who will vote for a particular cause or candidate. These measures are critical to various stakeholders, including political analysts, campaign managers, and politicians.