The table at the left shows the U.S. exports (in billions of dollars) to 19 countries for a recent year.

(a) Find the mean and the median of the exports.

(b) Find the mean and the median without the U.S. exports to Canada. Which measure of central tendency, the mean or the median, was affected more by the elimination of the Canadian exports?

(c) The U.S. exports to India were $21.5 billion. Find the mean and the median with the Indian exports added to the original data set. Which measure of central tendency was affected more by adding the Indian exports?

U.S. exports (in billions of dollars)

Canada: …………..    280.9

Mexico: …………..    198.4

Germany: ….……..     49.2

Taiwan: …………..     25.9

Netherlands: ……..      42.4

China: ……..……..    103.9

Australia: ….……..     27.5

Malaysia: …..……..    14.2

Switzerland: ……...     24.4

Saudi Arabia: …….     13.8

United Kingdom: ...     55.9

Japan: …………....      65.7

South Korea: ….....      43.4

Singapore: …….....      31.2

France: ……….…..     27.8

Brazil: ……….…..      42.9

Belgium: ………..       29.9

Italy: …………....        16.0

Thailand: ………..       10.9