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Dot plots

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What is an Individual? Individual: Individuals are the objects described by a set of data. Individuals may be people, but they may also be animals or things. What are some examples of individuals?

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DOT PLOTS Step 1: Label your axis and title your graph. Draw a horizontal line and label it with the variable. Title your graph Step 2: Scale the axis based on the values of the variable Step 3:Mark a dot above the number on the horizontal axis corresponding to each data value.

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Example 14 page 11: The number of goals scored by each team in the first round of the California Southern Section Division V high school soccer playoffs is shown in the following table.

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SHAPES Skewed Right: Most of the data is concentrated to the left of the graph (tail point to the right) Skewed Left Most of the data is concentrated to the right of the graph (tail points to the left) Symmetric: The majority of the data is concentrated in the center of the graph (shaped like a bell)

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**What is the shape of the dot plot?**

YES, It is skewed right.

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Center and Spread Center: the value that divides the observations so that about half have smaller values Spread: the smallest and larges values expressed in an interval

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**What are the center and spread of the dot plot?**

The center is 1 and the spread (RANGE) is 0 through 7

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Chapter 1.4. Variable: any characteristic whose value may change from one individual to another Data: observations on single variable or simultaneously.

Chapter 1.4. Variable: any characteristic whose value may change from one individual to another Data: observations on single variable or simultaneously.

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