Analyzing and Interpreting Graphs

Why do we use graphs to display our data?

• Graphs are pretty

• Graphs have nice colors

• Graphs help us make meaning of the data

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Purpose of graphs

What does it mean to interpret the data?

• To see how the data applies to the world around us

• To answer our investigation question

• To use the data to solve a problem

• All of the above

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Interpreting Data

True or False: Scientific investigation should only be done once

• True- what's the point in doing it again?

• False- the more times you do an investigation, the more sure you can be of you answer to the investigation question.

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Scientific investigations

Describe the situation.

• The volume of the balloon increases at a constant rate, then stays constant, then increases, then constant, and increases at a constant rate.

• The volume of the balloon increase at a constant rate, decreases, then stays constant, then increases, then constant, and increases at a constant rate.

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Interpreting Data

Rate of Change

Describe the situation.

• Sales decrease quickly at a constant rate, and then increase slowly at a constant rate.

• Sales stay constant, then decrease at a constant rate, and increase slowly.

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Interpreting Data

Rate of Change

Describe the situation.

• Horsepower increases at an increasing rate and then increases slowly.

• Horsepower increases at a constant rate and then increases slowly.

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Interpreting Data

Rate of Change

At 60 seconds, how far had this object traveled?

• 0 m

• 10 m

• 20 m

• 40 m

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Interpreting Data

Distance vs. Time graphs

How many seals were present in 2011?

• 25

• 30

• 40

• 50

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Interpreting Data

How long does it take the family to reach the beach?

• 1 hour

• 2 hours

• 3 hours

• 4 hours

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Interpreting Data

Distance vs. Time graphs

Motion Map

How long does the family spend at the beach?

• 1 hour

• 2 hours

• 3 hours

• 4 hours

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Interpreting Data

Distance vs. Time graphs

Motion Map