Page 557 - Basic College Mathematics with Early Integers

Vocabulary and Readiness Check

Use the choices below to fill in each blank. Some choices may be used more than once.

mean mode grade point average
median average
1. Another word for “mean” is .
2. The number that occurs most often in a set of numbers is called the .
sum of items
3. The of a set of number items is .
number of items
4. The of a set of numbers is the middle number. If the number of numbers is even, it is the
of the two middle numbers.
5. An example of weighted mean is a calculation of .

FOR EXTRA HELP
7.3 Exercise Set

Objectives Mixed Practice For each set of numbers, find the mean, median, and mode. If necessary, round
the mean to one decimal place. See Examples 1 and 3 through 6.

1. 15, 23, 24, 18, 25 2. 45, 36, 28, 46, 52

3. 7.6, 8.2, 8.2, 9.6, 5.7, 9.1 4. 4.9, 7.1, 6.8, 6.8, 5.3, 4.9

5. 0.5, 0.2, 0.2, 0.6, 0.3, 1.3, 0.8, 0.1, 0.5 6. 0.6, 0.6, 0.8, 0.4, 0.5, 0.3, 0.7, 0.8, 0.1

7. 231, 543, 601, 293, 588, 109, 334, 268 8. 451, 356, 478, 776, 892, 500, 467, 780

The ten tallest buildings in the world, completed as of the start of 2009, are listed in the following table. Use this table to
answer Exercises 9 through 14. If necessary, round results to one decimal place. See Examples 1 and 3 through 6.

9. Find the mean height of the five tallest buildings.
Building Height (in Feet)
Taipei 101 1670
Shanghai World Financial Center 1614
10. Find the median height of the five tallest buildings. Petronas Tower 1, Kuala Lumpur 1483
Petronas Tower 2, Kuala Lumpur 1483
Willis Tower, Chicago 1451
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11. Find the median height of the eight tallest buildings. Jin Mao Building, Shanghai 1381
Two International Finance Centre, Hong Kong 1362
CITIC Plaza, Guangzhou 1283
Shun Hing Square, Shenzhen 1260
12. Find the mean height of the eight tallest buildings.
Empire State Building, New York 1250
(Source: Council on Tall Buildings and Urban Habitat)
534