GRAPHS

VOCABULARY Graph- A tool that visually organizes data. Axis- The horizontal (x-axis) and vertical (y-axis) borders of a graph that are used to plot data points. Scale- The distance between points on the x and y axis.

A PIE GRAPH

A HISTROGRAM/BAR CHART

A SCATTER PLOT

A LINE CHART

WHAT KIND OF GRAPH?

TYPES OF GRAPHS Use student pages from the following resource: 8%20Statistics%20and%20Probability.pdf Describe the type of data organized in the graph. Describe the appearance of the graph. Decide which graph would best organize five types of data. Brainstorm kinds of questions that could be organized with bar, scatter, line, and pie-chart graphs.

USE A RESOURCE TO CREATE GRAPHS

PIE GRAPH

HISTOGRAM

WARM-UP At the Museum of Science…. There is a lightning show every 20 minutes. There is a live animal show every 15 minutes. If the lightning show and live animal show both start at the same time at 9 A.M., when is the next time that they will start at the same time?

GOALS Describe 4 types of graphs: histograms, scatter-plots, pie charts, and line graphs. Match each chart to the type(s) of data that they are most appropriate for. Choose a chart when given a data set.

READ ABOUT TYPES OF GRAPHS A scatter plot is more useful for looking at two related characteristics within one sample, such as weight of a package and cost of postage for the package. A scatter plot is created by placing one of those characteristics on the x–axis and one on the y–axis, then plotting each data point where it lines up on both the x–axis and the y–axis. Scatter plots are useful for showing variation. A line plot also shows the relationship between an x and y variable in a sample where there is not variation. Line plots are often used to show a change in the y-variable that happens over time. A circle graph is useful for showing the percentage of responses that fall into each category and comparing the sizes of categories. It is created by drawing a circle, then dividing it into pie wedges that are sized in proportion to the percentage of responses from the category represented by each pie wedge. A histogram is useful for comparing the sizes of groups in a category. First categories (which can be numerical) are created on the x-axis. Number intervals are plotted on the y-axis. Bars are plotted to show the size of each group.

WRITE DOWN THE TYPE(S) OF GRAPH THAT MATCH THE DESCRIPTION. HISTOGRAM, LINE, SCATTER, AND PIE Clues: 1) This graph shows a relationship between an x and y variable.

WRITE DOWN THE TYPE(S) OF GRAPH THAT MATCH THE DESCRIPTION. HISTOGRAM, LINE, SCATTER, AND PIE Clues: 1)This graph shows a relationship between an x and y variable. 2)This graph is made by matching values of the x and y variable and plotting a point.

WRITE DOWN THE TYPE(S) OF GRAPH THAT MATCH THE DESCRIPTION. HISTOGRAM, LINE, SCATTER, AND PIE Clues: 1)This graph shows a relationship between an x and y variable. 2)This graph is made by matching values of the x and y variable and plotting a point. 3)This graph is useful for showing variation.

WRITE DOWN THE TYPE(S) OF GRAPH THAT MATCH THE DESCRIPTION. HISTOGRAM, LINE, SCATTER, AND PIE Clues: 1)This graph shows a relationship between an x and y variable. 2)This graph is made by matching values of the x and y variable and plotting a point. 3)This graph is useful for showing variation. Answer: Scatter Plot

ACTIVITY Create a scatter plot using create-a-graph software that compares the armspan to height relationship of students in our classcreate-a-graph software

WRITE DOWN THE TYPE(S) OF GRAPH THAT MATCH THE DESCRIPTION. HISTOGRAM, LINE, SCATTER, AND PIE Clues: 1)This graph shows the relationship between the x and y variable.

WRITE DOWN THE TYPE(S) OF GRAPH THAT MATCH THE DESCRIPTION. HISTOGRAM, LINE, SCATTER, AND PIE Clues: 1)This graph shows the relationship between the x and y variable. 2)This graph is made by matching values on the x and y axis and plotting a point then connecting the points.

WRITE DOWN THE TYPE(S) OF GRAPH THAT MATCH THE DESCRIPTION. HISTOGRAM, LINE, SCATTER, AND PIE Clues: 1)This graph shows the relationship between the x and y variable. 2)This graph is made by matching values on the x and y axis and plotting a point then connecting the points. 3)These graphs are most useful for a sample where there isn’t variation. They are especially useful for showing changes over time.

WRITE DOWN THE TYPE(S) OF GRAPH THAT MATCH THE DESCRIPTION. HISTOGRAM, LINE, SCATTER, AND PIE Clues: 1)This graph shows the relationship between the x and y variable. 2)This graph is made by matching values on the x and y axis and plotting a point then connecting the points. 3)These graphs are most useful for a sample where there isn’t variation. They are especially useful for showing changes over time. Answer: Line Graph

ACTIVITY Choose a volunteer to do jumping jacks. Count how many jumping jacks happen in 6 10-second intervals.

WRITE DOWN THE TYPE(S) OF GRAPH THAT MATCH THE DESCRIPTION. HISTOGRAM, LINE, SCATTER, AND PIE Clues: 1)This graph shows the relationship between the x and y variable.

WRITE DOWN THE TYPE(S) OF GRAPH THAT MATCH THE DESCRIPTION. HISTOGRAM, LINE, SCATTER, AND PIE Clues: 1)This graph shows the relationship between the x and y variable. 2)This graph is best for comparing sizes of groups.

WRITE DOWN THE TYPE(S) OF GRAPH THAT MATCH THE DESCRIPTION. HISTOGRAM, LINE, SCATTER, AND PIE Clues: 1)This graph shows the relationship between the x and y variable. 2)This graph is best for comparing sizes of groups. 3)This graph is made by creating a grid using the x and y intervals. X and Y values are matched to create “bars.”

WRITE DOWN THE TYPE(S) OF GRAPH THAT MATCH THE DESCRIPTION. HISTOGRAM, LINE, SCATTER, AND PIE Clues: 1)This graph shows the relationship between the x and y variable. 2)This graph is best for comparing sizes of groups. 3)This graph is made by creating a grid using the x and y intervals. X and Y values are matched to create “bars.” Answer: Histogram

ACTIVITY Graph the number of heads tossed by each member of the class in a 60-second period.

WRITE DOWN THE TYPE(S) OF GRAPH THAT MATCH THE DESCRIPTION. HISTOGRAM, LINE, SCATTER, AND PIE Clues: 1)This graph shows the relationship between the x and y variable.

WRITE DOWN THE TYPE(S) OF GRAPH THAT MATCH THE DESCRIPTION. HISTOGRAM, LINE, SCATTER, AND PIE Clues: 1)This graph shows the relationship between the x and y variable. 2)This graph is used to compare the sizes of groups.

WRITE DOWN THE TYPE(S) OF GRAPH THAT MATCH THE DESCRIPTION. HISTOGRAM, LINE, SCATTER, AND PIE Clues: 1)This graph shows the relationship between the x and y variable. 2)This graph is used to compare the sizes of groups. 3)This graph converts data into percentages.

WRITE DOWN THE TYPE(S) OF GRAPH THAT MATCH THE DESCRIPTION. HISTOGRAM, LINE, SCATTER, AND PIE Clues: 1)This graph shows the relationship between the x and y variable. 2)This graph is used to compare the sizes of groups. 3)This graph converts data into percentages. Answer: Pie Chart

ACTIVITY Use create-a-graph software to make a pie chart comparing the percentage of students in the class who prefer Italian, soul, Mexican, or Chinese food. Note: Give students a quick tutorial reteaching the use of calculators and proportional relationships to find a percentage.

GOALS Find statistics in a reading Rephrase what the “statistic is saying” in your own words Decide what type of graph will best show the statistic Practice using “create a graph” software to create a graph for the statistic.

SEGREGATION IN BOSTON SCHOOLS

GRAPHING STATISTICS Find the statistics in the reading What are the best graphs to show the statistics being compared? Convert between ratios, percentages, and fractions Create a graph using software.software

SEGREGATION IN BOSTON SCHOOLS

GRAPHING STATISTICS Find the statistics in the reading What are the best graphs to show the statistics being compared? Convert between ratios, percentages, and fractions Create a graph using software.software

ANALYZE GIRL’S SUSPENSION RATES BY RACE