Page 529 - Basic College Mathematics with Early Integers

7 Statistics and Probability

7.1 Reading Pictographs, Bar Graphs,
Histograms, and Line Graphs
7.2 Reading Circle Graphs
Integrated Review—Reading Graphs
7.3 Mean, Median, and Mode
7.4 Counting and Introduction
to Probability

Vocabulary Check
Chapter Highlights
Chapter Review
Chapter Test We often need to make decisions based on known statistics or the probability of an event occurring. For example, we
Cumulative Review decide whether or not to bring an umbrella to work based on the probability of rain. We choose an investment based
on its mean, or average, return. We can predict which football team will win based on the trend in its previous wins and
losses. This chapter reviews presenting data in a usable form on a graph and the basic ideas of statistics and probability.

oday, space travel, while still not commonplace, is well within everyone’s compre-
hension. From landing on the Moon, to probes to Mars and beyond, the Hubble
TSpace Telescope,and an International Space Station,there are many exciting explo-
rations in space.There are even space tourists, who pay big money to travel in space.
If space travel is not for you, but you’d like to experience weightlessness, there
are commercial companies that offer rides on Boeing 727s with flight patterns similar
to that shown below to simulate zero gravity.
In Section 7.1, Example 2, we explore lunar and planetary exploration
since 1957.

Flight Pattern to Simulate Weightlessness

34,000
32,000 45 nose high 30 nose low
Altitude (feet) 30,000

28,000
zero
26,000
gravity
24,000
1.8 g 1.8 g

0 20 45 65
Manuever Time (seconds)
506