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Holt McDougal Algebra 1 10-3-EXT Dot Plots and Distributions 10-3-EXT Dot Plots and Distributions Holt Algebra 1 Lesson Presentation Lesson Presentation.

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Presentation on theme: "Holt McDougal Algebra 1 10-3-EXT Dot Plots and Distributions 10-3-EXT Dot Plots and Distributions Holt Algebra 1 Lesson Presentation Lesson Presentation."— Presentation transcript:

1 Holt McDougal Algebra EXT Dot Plots and Distributions 10-3-EXT Dot Plots and Distributions Holt Algebra 1 Lesson Presentation Lesson Presentation Holt McDougal Algebra 1

2 10-3-EXT Dot Plots and Distributions Create dot plots. Use a dot plot to describe the shape of a data distribution. Objectives

3 Holt McDougal Algebra EXT Dot Plots and Distributions dot plot uniform distribution symmetric distribution skewed distribution Vocabulary

4 Holt McDougal Algebra EXT Dot Plots and Distributions A dot plot is a data representation that uses a number line and xs, dots, or other symbols to show frequency. Dot plots are sometimes called line plots. A dot plot gives a visual representation of the distribution, or shape, of the data. The dot plots in Example 1 have different shapes because the data sets are distributed differently.

5 Holt McDougal Algebra EXT Dot Plots and Distributions

6 Holt McDougal Algebra EXT Dot Plots and Distributions Example 1 and 2 :Making a Dot Plots and Shapes of Distribution Gloria is collecting different recipes for chocolate chip cookies. The table shows the cups of flours needed in the recipes. Make a dot plot showing the data. Determine the distribution of the data and explain what the distribution means.

7 Holt McDougal Algebra EXT Dot Plots and Distributions Example 1 and 2 : Continued Find the least and greatest number in the cups of flour data set. Then use the values to draw a number line. For each recipe, place a dot above the number line for the number of cups of flour used in the recipe Amount of Flour Recipes Cup

8 Holt McDougal Algebra EXT Dot Plots and Distributions Example 1 and 2 : Continued The distribution is skewed to the right, which means most recipes require an amount of flour greater than the mean.

9 Holt McDougal Algebra EXT Dot Plots and Distributions Check It Out! Example 1 The cafeteria offers items at six different prices. John counted how many items were sold at each price for one week. Make a dot plot of the data. Find the least and greatest number in the price data set. Then use the values to draw a number line. For each item, place a dot above the number line for the cost of that item.

10 Holt McDougal Algebra EXT Dot Plots and Distributions Check It Out! Example 1 Continued

11 Holt McDougal Algebra EXT Dot Plots and Distributions Check It Out! Example 2 Data for team C members are shown below. Make a dot plot and determine the type of distribution. Explain what the distribution means.

12 Holt McDougal Algebra EXT Dot Plots and Distributions Check It Out! Example 2 Continued The data distribution is uniform. All team members ran about the same distance.


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