# Notes Graphs - PowerPoint PPT Presentation

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Notes Graphs. A graph is just a picture of an amount of something. Like size of buildings since 1900. Types of graphs. Circle or pie graph. Shows fractions of a whole. Bar graph uses bars to show the data (words or numbers).

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Notes Graphs

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## Notes Graphs

• A graph is just a picture of an amount of something. Like size of buildings since 1900.

### Types of graphs

• Circle or pie graph. Shows fractions of a whole.

• Bar graph uses bars to show the data (words or numbers).

• Histogram used to show pure numbers in order. Range of data can be shown, bars should be touching.

• Line graph, shows points plotted on a graph connected by a line. Any type of data.

• On a typical graph there are 2 axis.

• an X and a Y.

• Your independent variable goes on X axis ( it is almost always time)

• Your dependent variable goes on Y axis

• Your X and Y axis scale can be different

• but the spacing between the numbers should be the same on an axis.

• Graphs should have title, and descriptions on both X and Y axis.

• In other words your graph should TALK

• T title

• A axis evenly spaced

• L label both axis and title

• K key or legend if needed

• Two very important terms when working with graphs.

• Interpolation and Extrapolation

### Vocabulary

• Interpolation – is when you find a value that lies on the smooth curve or line between two actual data points.

• Extrapolation – Find a value that lies on the smooth curve or line beyond the actual plotted points.

• A graph is just a ______________ ____________ of something. Like size of buildings since 1900.

### Types of graphs

• Circle or pie graph. Shows ___________ of a whole.

• Bar graph uses bars to show the __________ (words or numbers).

• Histogram used to show _________ __________. Range of data can be shown, bars should be touching.

• _____________, shows points plotted on a graph connected by a line. Any type of data.

• On a typical graph there are 2 axis.

• an ______________.

• Your ____________ variable goes on X axis ( it is almost always time)

• Your ____________ variable goes on Y axis

• Your X and Y axis scale can be different

• but the spacing between the numbers should be the same on an axis.

• Graphs should have __________

_____________on both X and Y axis.

• In other words your graph should TALK

• T _________

• A ______________________

• L ______________________

• K______________________

• Two very important terms when working with graphs.

• Interpolation and Extrapolation

### Vocabulary

• Interpolation – is when you find a value that lies on the smooth curve or line between two actual data points.

• Extrapolation – Find a value that lies on the smooth curve or line beyond the actual plotted points.