Virginia SOL 8.PS.2

What students need to be able to do

• Formulate questions that require the collection or acquisition of data with a focus on boxplots.
• Determine the data needed to answer a formulated question and collect the data using observations, measurement, surveys, or experiments.
• Determine how statistical bias might affect whether the data collected from the sample is representative of a larger population.
• Organize and represent a numeric data set of no more than 20 items using boxplots, with or without technology.
• Identify and describe the lower extreme (minimum), upper extreme (maximum), median, upper quartile, lower quartile, range, and interquartile range given a data set represented by a boxplot.
• Describe how the presence of an extreme data point (outlier) affects the shape and spread of the data distribution of a boxplot.
• Analyze data represented in a boxplot by making observations and drawing conclusions.
• Compare and analyze two data sets represented in boxplots.
• Given a contextual situation, justify which graphical representation (e.g., pictographs, bar graphs, line graphs, line plots/dot plots, stem-and-leaf plots, circle graphs, histograms, boxplots) best represents the data.
• Identify components of graphical displays that can be misleading.