INTERPRET INFORMATION INVOLVING PROBABILITY
Probability and statistics are presented through the media in a variety of
contexts. Statistics, like probability, help predict the result of future events.
Statistics are collected from real-life events or studies.
statistics:
the collection and analysis of numerical information
data:
facts or pieces of information
Example 1:
A local radio station surveyed 200 students from one high school to
determine their favourite music. The results are shown in the table.
Music
rock
rap
country
a)
Express each percent as a decimal, and as a fraction in lowest terms.
rock: 45%
b)
rap: 35%
country: 20%
If there are 400 high school students in the city, determine the number that
would like each music type.
rock:
c)
Percent of Students
45
35
20
rap:
country:
Is it possible that the poll might not be accurate? What factors could have
influenced the responses?
Unit 7 Lesson 4
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