Warm Up 1.What does the data to the right tell you? 2.Are there any trends that you notice about plant height?

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GRAPHING BASICS Modifieid from: y-2-graphing-basics.ppt.

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Presentation transcript:

Warm Up 1.What does the data to the right tell you? 2.Are there any trends that you notice about plant height?

DATA The average plant height on day 0 was 22 mm. The average plant height on day 5 was 32 mm. The average plant height on day 3 was 27 mm. The average plant height on day 2 was 26 mm. The average plant height on day 4 was 30 mm.

Data Tables What is DATA? –Data is the information that collected during an experiment –It is generally the measurements of your dependent variable Why do we use data tables? –Data tables help scientists organize data so that it is easy to find the information that they need.

What kind of data is this? Determine what kind of data the following tables represent. Organize the data tables on the next slide into 2 categories: quantitative data and qualitative qualitative

Quantitative or Qualitative? Table 1

Quantitative or Qualitative? Table 2

Quantitative or Qualitative? Table 3

Quantitative or Qualitative? Table 4

Quantitative or Qualitative? Table 5

Quantitative or Qualitative? Table 6

Warm Up Which figure to the right represents the data in the clearest manner? Explain.

Graphing

Purpose of a graph Show data in a clear picture so that the trends are clear. Scientist use graphs to analyze data. Key words –TREND: –POSITIVE CORRELATION: –NEGATIVE CORRELATION:

Examples of Graphs What trends do you see in this graph? Is there a positive or negative correlation?

Examples of Graphs What trends do you see in this graph? Is there a positive or negative correlation?

Examples of Graphs What trends do you see in this graph? Is there a positive or negative correlation? What happens in the “A” section of the graph?

Examples of Graphs What trends do you see in this graph? Is there a positive or negative correlation?

Examples of Graphs What trends do you see in this graph? Is there a positive or negative correlation?

Which graph is the best depiction of the data? Why? Sitting Walking Running

Which graph is the best depiction of the data? Why?

Line graph

Bar vs. Line Graph Can this data be shown as a line graph? If yes, what would need to change about the graph?

Scale Year: 2000 Year: 2011 In which year did Mabel and Albert have greater changes in their heart (pulse) rate? How do you know?

Scale In what year was the pH of the lake the most basic?

Labeling Axis What are the appropriate labels for the axis?

Labeling Axis What are the appropriate labels for the axis? Time (years) pH

Is anything missing from this graph? If so, what?

5 Key parts to a GREAT graph! Title Labeled Axes Units Scale Key

How to make a simple graph Steps for ALL graphs: Draw the axes (X and Y) X: independent variable Y: dependent variable Determine variables and label the axis Steps for BAR graphs: Number the y-axis with the right scale Label the x-axis with categories Make bars that represent the data and color them Steps for LINE graphs: Number the y-axis with the correct scale Number the x-axis with the correct scale Plot the points according to the data Connect the points with a line

Can you explain the trends shown by these graphs? We clearly still have more to learn but now you know that basics!