Objective- To use tables and graphs to organize and represent data. A collection of numbers and/or information that describes something. Design # 1 2 3 4 Area in square units 5 9 13 17 Design # 1 2 3 4 5 6 Area 5 9 13 17 21 25 Make a line graph to represent this relationship.

Make a line graph to represent this relationship. Design # Area 1 2 3 4 5 6 9 13 17 21 25 Make a line graph to represent this relationship. Area of the Design Is the relationship increasing or decreasing? 45 40 35 30 25 20 15 10 5 Increasing How fast? Area 4 square units each design 0 1 2 3 4 5 6 7 8 9 Design #

Students Graduating from Loara High School Year 1990 1992 1994 1996 1998 2000 2002 Male 128 119 130 106 97 80 90 Female 80 99 104 112 98 116 120 Diff. 48 20 26 -6 -1 -36 -30 What is the difference in male and female graduates? What trends do you notice? The number of males is decreasing. The number of females is increasing. Make a double bar graph to represent this situation.

Students Graduating from Loara High School Year Male Female 1990 1992 1994 1996 1998 2000 2002 128 119 130 106 97 80 90 99 104 112 98 116 120 Students Graduating from Loara High School 140 130 120 110 100 90 80 70 60 50 40 30 20 10 Key Male Female # of students ‘90 ‘92 ‘94 ‘96 ‘98 ‘00 ‘02 Year

Which year showed the greatest difference between males and females graduating? Students Graduating from Loara High School 140 130 120 110 100 90 80 70 60 50 40 30 20 10 ‘90 ‘92 ‘94 ‘96 ‘98 ‘00 ‘02 Year # of students Male Female Key

Which year showed the greatest difference between males and females graduating? 1990 Year Male Female 1990 1992 1994 1996 1998 2000 2002 128 119 130 106 97 80 90 99 104 112 98 116 120 Diff. 48 10 26 -6 -1 -36 -30

Bar Graphs vs. Line Graphs Bar Graph Line Graph Ave. Life Span of Animals 70 60 50 40 30 20 10 Life span in years Mouse Fox Pig Chimp Donkey Daytime Temperature 4am 8am 12am 6am 10am 2pm 90 80 70 60 50 40 30 Temp. F -Used to compare quantities -Used to show change over time

Represent the data with an appropriate graph. Occupation Salary Teacher Lawyer Doctor Nurse $55,000 $84,000 $125,000 $42,000 Average Salaries Title 160140 120 100 80 60 40 20 Bars are equal width Salary in thousands Axis Label Horiz. Axis Teacher Lawyer Doctor Nurse Scale Occupation Marked 0 to 160 in steps of 20 Axis Label

Company Sales vs. Expenses (In Millions) Month Jan Feb Mar Apr May Jun Jul Sales 3.4 5.3 4.8 6.5 7.8 8.9 8.7 Expenses 7.8 6.9 4.5 7.4 8.3 9.4 8.8 Represent the data with an appropriate graph. 10 9 8 7 6 5 4 3 2 1 Key Sales Dollars (in Millions) Expenses Jan Feb Mar Apr May Jun Jul Months

Company Sales vs. Expenses (In Millions) 10 9 8 7 6 5 4 3 2 1 Dollars (in Millions) Jan Feb Mar Apr May Jun Jul Months Key Sales Expenses 1) Is the company making or losing money? 2) If profit = sales - expenses, at what point did the company make a profit?