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 theirterms 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.)

SAT Mathematics Practice Test 3

Question : 52 of 58

Marks: +1, -0

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 theirterms 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.)

Your Answer:

Validate

Solution:

The mean of a data set is determined by calculating the sum of the values and dividing by the number of values in the data set.
The sum of the ages, in years, in the data set is 703, and the number of values in the data set is 12.
Thus, the mean of the ages, in years, of the first 12 United States presidents at the beginning of their terms is

703/12

.
The fraction

703/12

cannot be entered into the grid, so the decimal equivalent, rounded to the nearest tenth, is the correct answer.
This rounded decimal equivalent is 58.6.

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