Who Works in the White House?

Today, more than 100 people work to keep the White House running--as an office as well as a home, museum, and stage for world events. Many workers stay at the White House for decades, while Presidents and their families come and go. The chart below lists the years of service of some White House employees.

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1. What is the mean number of years that an employee worked at the White House?

   1. 30 years

   2. 22 years

   3. 42 years

2. What is the median of the years spent working at the White House?

   1. 35 years

   2. 36 years

   3. 23 years

3. What is the mode number of years spent working at the White House?

   1. 34 years

   2. 20 years

   3. 49 years

4. Which employees worked the mode number of years?

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5. Which Presidents has Henry Haller worked for?

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   Mean is often referred to as the average. To find the mean, add all the numbers in a set and divide by the number of numbers in the set.

   Mean is the middle number. Rank the numbers in a set and pick the middle one. If there are two middle numbers, add them and divide by two. The result is the median.

   Mode is the number that appears most often in a set.

   More!

   List the...