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Learning Targets: Bar Graphs & Dot Plots I can create a variety of graphs. I can choose an appropriate graph for different situations.

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Presentation on theme: "Learning Targets: Bar Graphs & Dot Plots I can create a variety of graphs. I can choose an appropriate graph for different situations."— Presentation transcript:

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2 Learning Targets: Bar Graphs & Dot Plots I can create a variety of graphs. I can choose an appropriate graph for different situations.

3 Pictographs Uses pictures (or symbols) to represent data. Good for informal presentation, or to a young crowd. Favorite Ice cream Flavor Vanilla Chocolate Cookie Dough Cookies & Cream = 2 Students

4 Pictographs Favorite Ice cream Flavor Vanilla Chocolate Cookie Dough Cookies & Cream = 2 Students 1) How many students said vanilla is their favorite? 2) How many students prefer cookies and cream? 3) How many students were surveyed?

5 Bar Graphs Organizes data with categories using a bar. More formal, good for large amounts of data. Favorite Ice cream Flavor Vanilla Chocolate Cookie Dough Cookies & Cream 123456789

6 Bar Graphs Favorite Ice cream Flavor Vanilla Chocolate Cookie Dough Cookies & Cream 123456789 1) How many students like cookie dough the best? 2) How many students were surveyed?

7 Dot Plots Displays numerical data above a number line. Number of Siblings 0123456789

8 Pulse Rate Investigation Find your pulse Pulse Rate Count for 10 secondsMultiply by 6

9 Analyzing Data Minimum - Smallest Number Maximum - Largest Number Range = Maximum - Minimum

10 LEARNING TARGETS: Measures of Center I can find the mean, median, and mode to summarize data. I can determine if the mean, median, or mode is an appropriate measure of center.

11 Measures of Center Mean: Average, add the numbers and divide by how many numbers there are. –Your grades are the “mean” of your homework, quizzes, tests, etc.

12 Measures of Center Median: The Middle number, put numbers in order first. –Could we figure your grades using the median??

13 Measures of Center Mode: Most common number –Shoes in a department store are ordered this way.

14 Measures of Center Outliers: Numbers that are outside of the range of most of the data. –A judgement call when determining outliers.

15 Measures of Center Example: {15, 16, 11, 10, 18, 15, 17, 10} Minimum:Mean: Maximum:Median: Range:Mode:

16 Measures of Center Example: {20, 40, 85, 30, 35} Minimum:Mean: Maximum:Median: Range:Mode: Any Outliers??

17 Learning Targets: Histograms and Stem & Leaf Plots I can create a histogram given a set of data. I can interpret the information given on a histogram. I can create a stem & leaf plot given a set of data. I can interpret the information given on a stem & leaf plot.

18 Histograms Uses bars to display data in ‘bins’. Good for a large data set. Use with numerical data only. AMOUNT OF CHANGE IN POCKET 1 2 3 4 5 6 7 8 9 00.501.001.502.002.503.003.504.004.505.00

19 Histograms AMOUNT OF CHANGE IN POCKET 1 2 3 4 5 6 7 8 9 00.501.001.502.002.503.003.504.004.505.00 1) How many students had between $0.50 and $0.99? 2) What does the 6th bin represent? 3) Did any students have $3.50?

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