Age of presidential ascension
This histogram example shows how the age of presidents when assuming office approximately follows a bell curve. It was redesigned from the Wikimedia Commons file: Age of presidental ascention.jpg.
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. [creativecommons.org/licenses/by-sa/3.0/deed.en]
"Under the United States Constitution, the President of the United States is the head of state and head of government of the United States. As chief of the executive branch and head of the federal government as a whole, the presidency is the highest political office in the United States by influence and recognition. The president is also the commander-in-chief of the United States Armed Forces. The president is indirectly elected to a four-year term by an Electoral College (or by the House of Representatives should the Electoral College fail to award an absolute majority of votes to any person)." [List of Presidents of the United States. Wikipedia]
"The median age of accession is 54 years and 11 months, which falls between Herbert Hoover (22nd youngest) and Lyndon B. Johnson (23rd). The youngest person to assume office was Theodore Roosevelt (age 42), who became president following William McKinley's assassination. The youngest president elected to office was John F. Kennedy (age 43 years, 236 days). The oldest president to assume office was Ronald Reagan (age 69 years, 349 days)." [List of Presidents of the United States by age. Wikipedia]
The histogram example "Age of presidental ascention" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Histograms solution from the Graphs and Charts area of ConceptDraw Solution Park.