INTERPRETING GRAPHS

EXAMPLE 1 - VERTICAL BAR GRAPH

Internet use at Redwood Secondary School - 1995 to 2002

VERTICAL BAR GRAPH

In what year were boys and girls closest in their Internet use?

2. From 1995 to 2002 who used the Internet the most?

3. What is the first year in which girls used the Internet more than boys?

EXAMPLE 2 - VERTICAL BAR GRAPH

Tadpoles  -  PH is a measure of how acidic the water is.

8.0

7.5

7.0

6.5

6.0

5.5

45

69

78

88

43

23

VERTICAL BAR GRAPH

4. What is the best water pH for growing tadpoles?

5. Between what two pH readings is there the greatest change in tadpole numbers?

6. About how many tadpoles would we expect to find in water with a pH reading of 5.0?

7. What is one observation that you can make from this graph? Make sure you use the words "tadpoles" and "pH". Do not use any of the questions from above.

EXAMPLE 3 - HORIZONTAL BAR GRAPH

Preferred snack choices of students at Hillary's high school

HORIZONTAL BAR GRAPH

8. Which snack food was least preferred by girls?

9. Which snack food was preferred by substantially more boys than girls?

10. Which snack food was preferred equally by both boys and girls?

EXAMPLE 4 - LINE GRAPH

Cell phone use in Anytowne, 1996 to 2002

LINE GRAPH

11. During which year did Men first pass Women in their cell phone use?

12. During which 2 years did cell phone use drop slightly?

13. About how many total people were surveyed from 1996 to 2002?

EXAMPLE 5 - XY SCATTER GRAPH

Percentage of Car Ownership Based on Income

XY SCATTER GRAPH

14. Which income range had the lowest percentage of car ownership?

15. Which income range had the highest percentage of car ownership?

16. What percentage of car ownership did households with an average income of $50,000 have?

EXAMPLE 6 - VERTICAL BAR GRAPH

Yearly Number of Police Officers for Crimeville

VERTICAL BAR GRAPH

17. In what year did Crimeville have the greatest number of police officers?

18. In what year did Crimeville have the smallest number of police officers?

19. How many more police officers did Crimeville have in 1994 than in 1996?

EXAMPLE 7 - PIE GRAPH

Favorite Movies of Jenkins Middle High School Students

PIE GRAPH

20. What is the favorite genre of movies of students at Jenkins Middle High School?

21. What are the least favorite genres of movies of students at Jenkins Middle High School?

22. What two genres are equally liked by 14% of students at Jenkins Middle High School

EXAMPLE 8 - PICTOGRAPH

Color of Toothbrushes of Students in Mr. Bentley's 6th Period Computer Class

PICTOGRAPH

23. What color toothbrush do most students in this class use the most?

24. What color toothbrushes do students use the least?

25. What color of toothbrush is the third most popular?

EXAMPLE 9 - LINE GRAPH

Bathing the Dog

LINE GRAPH

26. How long did it take to give the dog a bath?

27. What is the highest point that the water got during the bath?

28. What was occurring between minute 0 and minute 6?

29. Why did the water significantly increase between minute 6 and minute 7?

30. Tell a story about what you think might have happened during the bath?