Question

Ages of the First $12$ United States Presidents at the Beginning of Their Terms in Office

President	Age (years)	President	Age (years)
Washington	$57$	Jackson	$62$
Adams	$62$	Van Buren	$55$
Jefferson	$58$	Harrison	$68$
Madison	$58$	Tyler	$51$
Monroe	$59$	Polk	$50$
Adams	$58$	Taylor	$65$

The table above lists the ages of the first $12$ United States presidents when they began their terms in office. According to the table, what was the mean age, in years, of these presidents at the beginning of their terms? (Round your answer to the nearest tenth.)

• A. $58.6$
  
• B. $58.2$
• C. $59.1$
• D. $59.9$

Answer 1

The correct option is A $58.6$

Mean Age $=\frac{\text{Sum of all ages}}{\text{Total people}}=\frac{57+62+58+58+59+58+62+55+68+51+50+65}{12}=\frac{703}{12}=58.58=58.6$