North Carolina Standard Course of Study
Grade 7
Number and Operations, Measurement, Geometry, Data Analysis and Probability, Algebra
COMPETENCY GOAL 4: The learner will understand and use graphs and data analysis.
Lessons (8)
Students discover algorithms as they sort shapes into Venn diagrams. Then students compare the efficiency of their algorithms using box plots.
Introduces students to quartiles and box plots.
Introduction and fine points of using bar graphs and histograms.
Introduces statistical measures of center.
This lesson will challenge students to think creatively by having them design and build water balloon catchers from random scrap materials, while requiring them to take into consideration a multitude of variables. Students will then construct at least two bar graphs to be used in a commercial advocating the purchase of their group's catcher.
Looks at statistics and data analysis concepts from the practical questions that arise in everyday life.
Introduces students to stem-and-leaf plots and calculating the mean, median, and mode from the plots.
Students learn about the difference between univariate and bivariate data and understand how to choose the best graph to display the data.
Activities (10)
Run a simulation of how a fire spreads through a stand of trees, learning about probability and chaos. Track the results of multiple burns and use the data to draw conclusions.
Enter data to create a bar graph, then change many settings for the graph's appearance.
Students can create box plots for either built-in or user-specified data as well as experiment with outliers. User may choose to use or not use the median for calculation of interquartile range.
Enter your own data categories and the value of each category to create a pie chart. There are also built in data sets which can be viewed.
View histograms for built-in or user-specified data. Experiment with how the size of the class intervals influences the appearance of the histogram. Parameters: Data sets, class sizes.
Enter data and view the mean, median, variance, and standard deviation of the data set. Parameters: Number of observations, range for observations, which statistics to view, identifiers for the data.
Enter data to create a double bar graph, then manipulate the graph's maximum and minimum values.
Create a pie chart, adjusting the size of the divisions using your mouse or by entering values. Parameters: Number of sections, size of sections, whether to use percents or fractions.
PlopIt allows users to build dot plots of data using the mouse. View how the mean, median, and mode change as entries are added to the plot. Parameters: Range for observations.
View stem-and-leaf plots of your own data, and then practice finding means, medians and modes. Stem and Leaf Plotter is one of the Interactivate assessment explorers.