class 10, october 6, 2015 lessons 2.3 & 2.4. by the end of this lesson, you should understand...
DESCRIPTION
By the end of this lesson, you should be able to: ◦ Calculate a relative change ◦ Explain the difference between relative change and absolute changeTRANSCRIPT
MATH 092-013 Mathematical Literacy for
College Students IClass 10, October 6, 2015
Lessons 2.3 & 2.4
By the end of this lesson, you should understand that:
◦ A relative change is different from an absolute change
◦ A relative measure is always a comparison of two numbers
Lesson 2.3 Objectives
By the end of this lesson, you should be able to:
◦ Calculate a relative change
◦ Explain the difference between relative change and absolute change
Lesson 2.3 Objectives
U.S House of Representatives Apportionment, based on the 2010 Census
Source: “2010 Apportionment Results,” United States Census Bureau ,https://www.census.gov/population/apportionment/data/2010_apportionment_results.html
(accessed July 29, 2014) .
Main idea:◦ Change can be discussed as absolute change or relative
change
Main idea:◦ A relative measure is always a comparison of two numbers
◦ One way to show a relative change is to use a percentage increase or decrease.
◦ Using percentages to show relative change is the third way you have used percentages in this class. Previously, you have used percentages to probabilities, or to compare the relative size of two numbers.
Lesson 2.3 Connections
By the end of this lesson, you should understand:
◦ The scale on graphs can change the perception of the information they represent
◦ To fully understand a pie chart, the reference value must be known
Lesson 2.4 Objectives
By the end of this lesson, you should be able to:
◦ Calculate relative change from a line graph
◦ Estimate the absolute size of the portions of a pie chart given its reference value
◦ Use data displayed on two graphs to estimate a third value
Lesson 2.4 Objectives
Main idea:◦ It is important to ask questions about and make
sense of data
Main idea:◦ In all relative measures, be aware of the reference
value
Lesson 2.4 Connections