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# Graphs

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### Graphs

1. 1. Graphs By: Tyler, Jatan
2. 2. Rules of XY-Coordinate Graph • Ordered pair is written as (x, y) • First number of the ordered pair is called the x- coordinate (the horizontal axis) • Second number of the ordered pair is the y- coordinate (the vertical axis) • Origin is represented as (0, 0)
3. 3. X and Y Coordinate Graph Ex. 1 2 3 4 x-intercept y-intercept y = 2x + 4 y x 2
4. 4. A Complete Graph • All graphs should be neat, easy to read and be constructed with a straight edge • Units along the axes are clearly labled • The axes are labeled with words • Must have a title • Must have equal intervals • Needs a key or a legend
5. 5. Stem and Leaf Plot • The stem is the part that represents the leading digit of the number • The leaf represents the other digits after the leading digit
6. 6. Stem and Leaf Plot Ex. Stem Leaf 1 2,3,4,8,8 2 3,7,8,9,9,9 3 1,1,2,3,3,5,7,9 4 1,2,5,7,8,9 5 1,8,9 6 1,2,8,9 7 1,5,9,9
7. 7. Box and Whisker Plot • Box and Whisker Plots are divided into quartiles • The lower half of the set of numbers is the lower quartile • The upper half of the set of numbers is called the upper quartile • To find the quartiles the numbers have to be arranged from least to greatest
8. 8. Box and Whisker Plot Ex. QuickTime™anda TIFF(Uncompressed)decompressor areneededtoseethispicture.
9. 9. Line Plot • A line plot is used to show amounts or choices easily.
10. 10. Example of line plot