2. Prepare a bar graph based upon scientific data AIM: What is a bar graph?

3. DEFINITION: a BAR GRAPH is a diagram in which separate but related items are represented by rectangular shapes called “bars” the horizontal axis usually represents the manipulated variable the vertical axis usually represents the responding variable AIM: What is a bar graph?

4. EXAMPLE: Absences today 6th grade7 7th grade12 8th grade 4 Put this in a bar graph AIM: What is a bar graph?

5. Step One: Draw your axis:

6. AIM: What is a bar graph? Step Two: label your axis: Grade Level 6th7th8th # of Absences 5 10 15

7. AIM: What is a bar graph? Step Three: plot your data: Grade Level 6th7th8th # of Absences 5 10 15

8. AIM: What is a bar graph? Step Four: Fill in your bars: Grade Level 6th7th8th # of Absences 5 10 15

9. AIM: What is a bar graph? Step Five: What is Missing? TITLE YOUR GRAPH! Grade Level 6th7th8th # of Absences 5 10 15

10. AIM: What is a bar graph? Step Five: Possible Title -- Absences in Each Grade Level Grade Level 6th7th8th # of Absences 5 10 15

11. AIM: What is a bar graph? Step Five: Alternative Title {x vs. y} Grade Level vs. Absences Grade Level 6th7th8th # of Absences 5 10 15

12. Example: What is the difference between boys and girls on Team A in each Science Class? 2nd period:10B8G 5th8B10G 6th7G11B 7th12G8B AIM: What is a Bar Graph?

13. What should we do first? We should probably put our “raw data” into a better and simpler data table. 2nd period:10B8G 5th8B10G 6th7G11B 7th12G8B any suggestions? AIM: What is a Bar Graph?

14. Boys and Girls in each Science Class PeriodBoysGirls 2108 5810 6117 7812 AIM: What is a Bar Graph?

15. AIM: What is a bar graph? Step One: Draw your axis:

16. AIM: What is a bar graph? Step Two: label your axis: Science Classes 25672567 # of Boys/Girls 5 10 15

17. AIM: What is a bar graph? Step Three and Step Four: Plot your data and fill in your bars: Science Classes: 25672567 # of Boys/Girls 5 10 15 BoysGirls

18. AIM: What is a bar graph? Step Five: ???? TITLE:Boys and Girls in Each Science Class Science Classes 25672567 # of Boys/Girls 5 10 15

19. AIM: What is a bar graph? Step Five: ???? {x vs. y} Science Class vs. the Number of Boys and Girls Science Classes 25672567 # of Boys/Girls 5 10 15

20. AIM: What is a bar graph?

21. Tips for Bar Graphs? The manipulated variable always goes on the x axis. (What does that mean?) Title and Label all axis. Include the units! Determine the correct “scale” to be used on the graph. Make sure your vertical axis uses a scale which is consistent and does not change AIM: What is a bar graph?

22. Tips for Bar Graphs? The width of all bars should be the same You should leave a “skipped” space between each separate bar group. That “skipped” space should be the same distance for each category AIM: What is a bar graph?

23. Tips for Bar Graphs? AIM: What is a bar graph?

24. F-Plant 1 NF-Plant 2 (inches) (inches) 224 8787 108 149 Day of Growth 2 5 10 15 20 Table of Plant Days vs. Plant Height:

25. : Days of Growth 25 10 15 20 Height of Plant 2 6 F-Plant 1NF- Plant 2 4 8 10 14 12

26. : Days of Growth 25 10 15 20 Height of Plant 2 6 F-Plant 1NF- Plant 2 4 8 10 14 12 What is wrong with this Graph (2 things) ?

27. : Days of Growth 25 10 15 20 Height of Plant 2 6 F-Plant 1NF- Plant 2 4 8 10 14 12 Days of Growth vs. Plant Height inches

28. Class ACTIVITY: Creating Bar Graphs page 63 AIM: What is a Bar Graph?

29. Knap-Sack Brand BrandNumber of Boys NIKE20 FUBU40 Polo30 TARGET10

30. Knap-sack brand vs Students

31. A Team Population YearNumber 2004110 2003105 200285 2001101

32. Years vs. Number of Students

33. Sports Participation by Sex SportNumber of BoysNumber of Girls Soccer2520 Baseball2030 Basketball15 Tennis816

34. Sports Participation by Sex

35. NMS Fundrasing ActivityReceiptsExpense Car wash10060 Breakfast15050 Bake Sale12525 Raffle200100

36. Event vs. Dollar Amount

37. NMS Absences Day6 th grade7th8th Tuesday5106 Wednesday7106 Thursday666

38. Day vs Absences

39. Homework: INTERNET QUESTIONS AIM: What is a bar graph?