1. New Quizlet vocabulary Controlled Experiment- an experiment in which only one variable is changed. Control Group- Does not receive special treatment (the variable) and is used as a comparison for the experimental group. Data- evidence; information gathered from observations Theory-A set of related hypotheses that have been tested and confirmed many times by many different scientists Bias- a particular preference or point of view that is personal, rather than scientific.

2. Unit 1 Lesson 2- Graphing

3. A Visual Display A graph is a visual display of information or data. This is a graph that shows a girl walking her dog.

4. A Visual Display The horizontal axis, or the x-axis, measures time. Time is the independent variable because it is the one you have control over.

5. A Visual Display The distance from home that the girl and the dog walk is the other variable. It is the dependent variable and is measured on the vertical axis, or y- axis.

6. A Visual Display Different kinds of graphs  line, bar, and circle  are appropriate for displaying different types of information Graphs make it easier to understand complex patterns by displaying data in a visual manner. Scientists often graph their data to detect patterns that would not have been evident in a table.

7. Line Graphs A line graph can show any relationship where the dependent variable changes due to a change in the independent variable. Line graphs often show how a relationship between variables change over time.

8. Line Graphs You can show more than one event on the same graph as long as the relationship between the variables is identical. Suppose a builder had three choices of thermostats for a new school. He wanted to test them to know which was the best brand to install throughout the building.

9. Line Graphs

10. Bar Graphs A bar graph is useful for comparing information collected by counting.

11. Circle Graphs A circle graph, or pie graph, is used to show how some fixed quantity is broken down into parts The circular pie represents the total. The slices represent the parts and usually are represented as percentages of the total.

12. Circle Graphs This figure illustrates how a circle graph could be used to show the percentage of buildings in a neighborhood using each of a variety of heating fuels.

13. Types of Graphs Line Graph shows the change over time. Dependent Variable Independent Variable

14. Types of Graphs Bar Graph Shows comparison

15. Types of Graphs Pie Graph Shows percentages

16. Your Turn You will use given data to construct a line graph and a bar graph Remember ALL graphs must have A title Labeled x axis Labeled y axis All data properly graphed

17. Graph 1 Ice Cream Flavor Number of Students Chocolate9 Vanilla5 Strawberry7 Cookies N Cream 9 Rocky Road5 Banana Split4 A survey was done on the favorite ice cream flavors of Mrs. Jackson’s class.

18. Graph 2 Time of Day Number of Fish 7 am5 8 am6 9 am8 10 am3 11 am9 12 pm7 Zach and London went on a fishing trip. The table shows how many fish they caught each hour.

19. Graph 3 Time of DayTemperature 8 a.m.65 9 a.m.72 10 a.m.80 11 a.m.84 12 p.m.89 1 p.m.90 The Smith Family hosted a family reunion at the park. This data table shows the temperature change during the day.

20. Graph 4 TeamNumber of Students Dallas Mavericks 7 San Antonio Spurs 15 Boston Celtics 20 Miami Heat48 New York Knicks 25 Los Angeles Lakers 32 A survey was conducted to determine the favorite Basketball teams of students at SHJHS. The table shows the results.