Pictographs - Linn-Benton Community College Get Inspired...
Transcript of Pictographs - Linn-Benton Community College Get Inspired...
![Page 1: Pictographs - Linn-Benton Community College Get Inspired ...cf.linnbenton.edu/mathsci/math/abbess/upload/section8.3c.pdf · Pictographs •A pictograph is a type of graph in which](https://reader034.fdocuments.net/reader034/viewer/2022042511/5aa80a1b7f8b9acf258b54e3/html5/thumbnails/1.jpg)
Pictographs
• A pictograph is a type of graph in which
pictures, symbols, or icons represent
quantities.
• Pictographs can represent data in
interesting ways, but they can also be
misleading.
![Page 2: Pictographs - Linn-Benton Community College Get Inspired ...cf.linnbenton.edu/mathsci/math/abbess/upload/section8.3c.pdf · Pictographs •A pictograph is a type of graph in which](https://reader034.fdocuments.net/reader034/viewer/2022042511/5aa80a1b7f8b9acf258b54e3/html5/thumbnails/2.jpg)
Example 10
• This pictograph
predicts the world
population.
• Each person icon
represents 1 billion
people.
![Page 3: Pictographs - Linn-Benton Community College Get Inspired ...cf.linnbenton.edu/mathsci/math/abbess/upload/section8.3c.pdf · Pictographs •A pictograph is a type of graph in which](https://reader034.fdocuments.net/reader034/viewer/2022042511/5aa80a1b7f8b9acf258b54e3/html5/thumbnails/3.jpg)
Example 11 • Each hotdog represents 10% of campers.
![Page 4: Pictographs - Linn-Benton Community College Get Inspired ...cf.linnbenton.edu/mathsci/math/abbess/upload/section8.3c.pdf · Pictographs •A pictograph is a type of graph in which](https://reader034.fdocuments.net/reader034/viewer/2022042511/5aa80a1b7f8b9acf258b54e3/html5/thumbnails/4.jpg)
Example 12 • This pictograph compares amounts spent on
different types of holiday gifts.
![Page 5: Pictographs - Linn-Benton Community College Get Inspired ...cf.linnbenton.edu/mathsci/math/abbess/upload/section8.3c.pdf · Pictographs •A pictograph is a type of graph in which](https://reader034.fdocuments.net/reader034/viewer/2022042511/5aa80a1b7f8b9acf258b54e3/html5/thumbnails/5.jpg)
Example 13 • Why is this pictograph misleading?
![Page 6: Pictographs - Linn-Benton Community College Get Inspired ...cf.linnbenton.edu/mathsci/math/abbess/upload/section8.3c.pdf · Pictographs •A pictograph is a type of graph in which](https://reader034.fdocuments.net/reader034/viewer/2022042511/5aa80a1b7f8b9acf258b54e3/html5/thumbnails/6.jpg)
Example 13, cont’d
• Solution: The bars are not proportional in
height to the amounts they represent.
• For example, there were nearly 4 times as many
students in grades 1-8 as there were in pre-
elementary.
• The bar representing grades 1-8 is only about 3
times as tall as the one representing pre-
elementary students.
• This causes the difference to look smaller than it
really is.
![Page 7: Pictographs - Linn-Benton Community College Get Inspired ...cf.linnbenton.edu/mathsci/math/abbess/upload/section8.3c.pdf · Pictographs •A pictograph is a type of graph in which](https://reader034.fdocuments.net/reader034/viewer/2022042511/5aa80a1b7f8b9acf258b54e3/html5/thumbnails/7.jpg)
Example 14 • Why is this pictograph misleading?
![Page 8: Pictographs - Linn-Benton Community College Get Inspired ...cf.linnbenton.edu/mathsci/math/abbess/upload/section8.3c.pdf · Pictographs •A pictograph is a type of graph in which](https://reader034.fdocuments.net/reader034/viewer/2022042511/5aa80a1b7f8b9acf258b54e3/html5/thumbnails/8.jpg)
Example 14, cont’d
• Solution: The bars are not proportional
to the amounts they represent.
• The bars are also angled, emphasizing
the length of the top bar and making the
bottom bar look shorter.
![Page 9: Pictographs - Linn-Benton Community College Get Inspired ...cf.linnbenton.edu/mathsci/math/abbess/upload/section8.3c.pdf · Pictographs •A pictograph is a type of graph in which](https://reader034.fdocuments.net/reader034/viewer/2022042511/5aa80a1b7f8b9acf258b54e3/html5/thumbnails/9.jpg)
Example 15
• Why is this pictograph misleading?
![Page 10: Pictographs - Linn-Benton Community College Get Inspired ...cf.linnbenton.edu/mathsci/math/abbess/upload/section8.3c.pdf · Pictographs •A pictograph is a type of graph in which](https://reader034.fdocuments.net/reader034/viewer/2022042511/5aa80a1b7f8b9acf258b54e3/html5/thumbnails/10.jpg)
Example 15, cont’d
• Solution: It must be clear whether a 2-
dimensional or 3-dimensional object is being
used to represent a quantity.
• The amount of milk sold in 2003 was about twice
the amount sold in 1997.
• It is not clear whether the volume or the height of
the carton represents the milk quantity.
• The volume of the second carton is 8 times as
large as the volume of the first carton. This is
misleading.